find k so that x^2+2x+k is a factor of 2x^4+x^3-14x^2+5x+6. also find all the zeroes of the two polynomial​

Answers

Answer 1

Compute the quotient and remainder,

[tex]\dfrac{2x^4+x^3-14x^2+5x+6}{x^2+2x+k} \\\\ = 2x^2 - 3x - (8+2k) + \dfrac{(21+7k)x+(6+8k+2k^2)}{x^2+2x+k}[/tex]

The remainder upon dividing [tex]2x^4+x^3-14x^2+5x+6[/tex] by [tex]x^2+2x+k[/tex] should leave no remainder, which means

[tex]21+7k = 0 \implies 21 = -7k \implies k=-3[/tex]

and

[tex]6+8k+2k^2 = 0 \implies 2(k+3)(k+1)=0 \implies k=-3\text{ or }k=-1[/tex]

Only k = -3 makes both remainder terms vanish.

Then the previous result reduces to

[tex]\dfrac{2x^4+x^3-14x^2+5x+6}{x^2+2x-3} = 2x^2 - 3x - 2[/tex]

so that

[tex]2x^4+x^3-14x^2+5x+6 = (x^2+2x-3) (2x^2 - 3x - 2) \\\\ 2x^4+x^3-14x^2+5x+6 = (x+3)(x-1)(2x + 1)(x-2)[/tex]

and so the zeroes of the quartic polynomial are x = -3, x = 1, x = -1/2, and x = 2.


Related Questions

A lottery has a grand prize of 25and 1/2 million dollars. There are 5 people who have winning tickets and they share this prize equally. How many millions of dollars does each person get? Express the answer as a mixed number.

Answers

Answer:

5 1/10 million dollars

Step-by-step explanation:

25and 1/2 million dollars = 25 1/2 million dollars

= (25*2) + 1 / 2

= 50+1/2

= 51/2

Total prize = 51/2 million dollars

Number of people with winning ticket = 5

How many millions of dollars does each person get?

Amount of prize each person get = Total prize / Number of people with winning ticket

= 51 / 2 ÷ 5

= 51/2 × 1/5

= (51 * 1) / (2 * 5)

= 51/10

= 5 1/10 million dollars

Amount of prize each person get = 5 1/10 million dollars

How do you fix a uneven face in a month?

Tips

Answers

Answer:

I know this may not help but

Step-by-step explanation:

Fillers. Inserting a “soft filler” into your face by way of an injection may correct the appearance of facial asymmetry. ...

Facial implants

Rhinoplasty

these are the top ideas I have searcehd online although it may not look good in a month if your going with Rhinoplasty

Your dentist may be able to help.

all perfect numbers from 20 to 30

Answers

Answer:

There is only one perfect number between 20 to 30 which is 28.

Explanation:

The number 28 is a perfect number because its factors are 1, 2, 4, 7, 14 and 28.

In how many ways can alice give 12 apples to 3 children if each child must get at least 1 apple

Answers

You can give four apples to each child

There are 91 ways in which Alice can give 12 apples to 3 children, with each child receiving at least 1 apple using a combination formula.

The question can be solved using  a method called "stars and bars".

Now, we need to find the number of ways to arrange 12 stars and 3 bars. The number of ways to arrange 12 stars and 3 bars in the given formula:

Number of ways = (n + k - 1) choose (k - 1)

Where n is the total number of objects = 12

k is the number of groups =  3

Number of ways = (12 + 3 - 1) choose (3 - 1)

Number of ways = 14 choose 2

The combination formula can be used as:

Number of ways = {14!}{(2! [tex]\times[/tex] (14 - 2)!)}

Number of ways = 14! / (2! * 12!)

Number of ways = (14 * 13) / 2

Number of ways = 91

So, there are 91 ways in which Alice can give 12 apples to 3 children, with each child receiving at least 1 apple.

Learn more about combinations here:

https://brainly.com/question/20211959

#SPJ4

John leaves his house at Sam. It
takes 35 minutes to walk to
school. He then has 2 hours and 2
minutes of lessons. Break time is
15 minutes long, What time does
break finish?

Answers

Answer:

7:52am

Step-by-step explanation:

John leaves by 5:00am

He gets to school after 35 minutes

The time now is 5:00 + 0:35 = 5:35am

After 2 hours and 2 mins of lectures, the time is 5:35 + 2:02 = 7:37am

After 15 minutes, the time is 7:37 + 0:15 = 7:52am

Therefore the answer is 7:52am.

Find the volume of this square based pyramid. 5 cm 5 cm 5 cm. Round to the nearest tenth.

V=?cm3

Answers

Answer:

41.666 cm³ or 41.7 cm³  rounded to the nearest tenth.

Step-by-step explanation:

Volume of a square pyramid = base length² × height ÷ 3

25 × 5/3 = 41. 666

Have a great day:)

Answer:

41.7

Step-by-step explanation:

It says to ROUND which will get you 41.7

A triangle has asides of 7cm, 24cm, and 25cm. how can you tell whether it is the right triangle?.

( If you can answer this I will take you on my brain list)

Answers

Answer:

because it has 7 cm a helper of right angle triangle and me can also use phythogorreas triplet formula

This is a right angle! It cropped out but the long end would be 25.

Can someone help me with these 2 answers

Answers

Answer:

2. Side length =9

Step-by-step explanation:

A square has all sides equal. and it has 4 sides, so 36 divided by 4 =9.

3.x squared =6

answer is x=3

square root both sides.

2. The side length is 9

Find the length of side x in simplest radical form with a rational denominator.
45
4
45
x
Answer: =
Submit Answer

attempt 1 out of 2
Privacy Policy Terms of Service
Could I get some help with this

Answers

Answer:

x=2*sqrt(2)

Step-by-step explanation:

cos(theta)=Base/Hypotenuse

cos(45)=x/4

x=2*sqrt(2)

What is the factored form of

Answers

Answer:

C

Step-by-step explanation:

You can distribute the values or even plug in x=2 and see which one matches.

Which expression is a sum of cubes

Answers

Answer: what is the rest of the question?

Step-by-step explanation:

The following figures are parallelogram. find X and y​

Answers

Answers:  x = 3 and y = 13

==============================================================

Explanation:

For any parallelogram, the diagonals always cut each other in half.

This means the pieces that are y+5 and 18 cm long are equal

y+5 = 18

y = 18-5

y = 13

And so are the pieces that are x+y and 16 cm long

x+y = 16

x+13 = 16

x = 16-13

x = 3

Side note: the term "bisecting" is often used when saying "cutting in half".

Kylee manages a small theme park and she has been analyzing the attendance data. Kylee finds that the number of visitors exponentially as the tempature increases, and this situation is represented by the function f(x) = 4 ^ x Kylee also finds a linear equation that no deals the number of people who leave the park early depending on the change in temperature , and it is represented by f(x) = - x + 5. The graph of the two functions is below. Find the solution to the two functions and explain what the solution represents.

Answers

Answer:

(1 , 4)

Step-by-step explanation:

f(x) = 4^x ,where x is the temperature, and y or f(x)  is the number of visitors that come to the park

f(x) = -x +5 , where x is the temperature and, y or f(x) is the number of visitors that leave early

the solution of the system of equations is the point of intersection of the 2 graphs and is (1,4)

when the temperature is 1 will have 4 visitors who will come at the park and also leave early

4 over 5 in standard form

Answers

Answer:0.8

Step-by-step explanation:

it is basically 10 times 8 to the power of -1

need help solving the equation, trying to figure whether I multiply or divide.​

Answers

Answer:

m∠B = 43°

b = 26.1

c = 38.3

Step-by-step explanation:

By applying triangle sum in the given triangle,

47° + 90° + m∠B = 180°

137° + m∠B = 180°

m∠B = 43°

By applying sine ratio to the angle measuring 47°.

sin(47°) = [tex]\frac{\text{Opposite side}}{\text{Hypotenuse}}[/tex]

            = [tex]\frac{28}{c}[/tex]

c = [tex]\frac{28}{\text{sin}(47^{\circ})}[/tex]

c = 38.28

c ≈ 38.3

By applying cosine rule,

cos(47°) = [tex]\frac{\text{Adjacent side}}{\text{Hypotenuse}}[/tex]

             = [tex]\frac{b}{c}[/tex]

             = [tex]\frac{b}{38.3}[/tex]

b = 38.3[cos(47°)]

b = 26.1

Find AC , given that line AD is the perpendicular bisector of BC

Answers

Answer:

AC = 29

Step-by-step explanation:

We'll begin by calculating AD. This can be obtained as follow:

AB = 29

BD = 17

AD =?

AB² = BD² + AD²

29² = 17² + AD²

841 = 289 + AD²

Collect like terms

841 – 289 = AD²

552 = AD²

Take the square root of both side

AD = √552

Finally, we shall determine AC. This can be obtained as follow:

DC = BD = 17

AD = √552

AC =.?

AC² = DC² + AD²

AC² = 17² + (√552)²

AC² = 289 + 552

AC² = 841

Take the square root of both side

AC = √841

AC = 29

Read the poem "The Snake" by Emily Dickinson.

A narrow fellow in the grass
Occasionally rides;
You may have met him, — did you not,
His notice sudden is.

The grass divides as with a comb,
A spotted shaft is seen;
And then it closes at your feet
And opens further on.

He likes a boggy acre,
A floor too cool for corn.
Yet when a child, and barefoot,
I more than once, at morn,

Have passed, I thought, a whip-lash
Unbraiding in the sun, —
When, stooping to secure it,
It wrinkled, and was gone.

Several of nature's people
I know, and they know me;
I feel for them a transport
Of cordiality;

But never met this fellow,
Attended or alone,
Without a tighter breathing,
And zero at the bone.

Which statement best describes Dickinson’s use of figurative language in the final stanza?

She uses comparisons to show the speaker’s connection to the snake .
She uses a simile to show that snakes are harmless creatures .
She uses a metaphor to describe the movement of the snake.
She uses exaggeration to emphasize the speaker’s fear of snakes.

Answers

Answer:

I think it is the last answer: She uses exaggeration to emphasize the speakers fear of snake.

Have a Wonderful Day ;) ;D

Answer:

The answer is D! I took the topic test review!

Step-by-step explanation:

D- She uses exaggeration to emphasize the speaker’s fear of snakes.


The radius of the circle below intersects the unit circle at (3/5 • 4/5)What is the approximate value of e?

Answers

Answer:

do you have a pic of it but i think its 15.75

Step-by-step explanation:

What are the restrictions on the domain of the following function?
f(x)=x-3/(x-3)(x-4)(x-5)

Answers

Answer:

Step-by-step explanation:

C

Question 2 Multiple Choice Worth 1 points)
(02.05 MC)
Graph g(x), where f(x) = 4x - 2 and g(x) = f(x + 1).

Answers

Answer:

Solution: means we replace 'x' with 'x+1' and we get g (x). Let us put x = 0 and then y = 0 to find two points on coordinate axis to easily plot the graph of g (x). Now, let us put y = 0 and find out x. So, second point is . Now, let us plot A and B then extend the line joining AB.

Identify the segments that are parallel, if any, if ∠DCB and ∠CDA are supplementary.

Answers

Answer:

C

Step-by-step explanation:

We are given that

[tex]\angle[/tex]DCB and [tex]\angle[/tex]CDA are supplementary.

We have to identify the parallel segments if [tex]\angle[/tex]DCB and [tex]\angle[/tex]CDA are supplementary.

Supplementary angles: If the angles are supplementary then the sum of two angles is 180 degrees.

Therefore,

[tex]\angle DCB+\angle CDA=180^{\circ}[/tex]

Therefore, angle DCB and angle CDA are interior angles .

Because CA is a transversal line and sum of interior angles is 180 degrees.

When the sum of interior angles formed between two lines  and on same side of transversal line is 180  degrees. Then the lines are parallel.

Therefore, angle DCB and angle CDA are formed between line AD and BC.

Hence, AD is parallel to BC.

Option C is correct.

Answer:

c

Step-by-step explanation:

i had the same question

Mr Rai sale a watch for Rs 2035 a profit of 10% how much money has he paid to buy the also find his profit amount​

Answers

Answer:

He paid Rs 1,850 to buy the watch

Profit = Rs 185

Step-by-step explanation:

Cost price = x

Profit = 10% of x

Selling price = Rs 2035

Profit = Selling price - cost price

10% of x = 2035 - x

0.1x = 2035 - x

0.1x + x = 2035

1.1x = 2035

x = 2035 / 1.1

x = 1,850

Cost price = x = Rs 1,850

Profit = 10% of x

= 10% of 1,850

= 0.1 × 1850

= 185

Profit = Rs 185

Which value is equivalent to x +4/4+x?
–4
–1
1
4

Answers

the answer is d. 4 i hope this helps:)

For the function f(x) = -4^-x + 5, if x→∞, then y → ____.

Answers

y approaches 5.

As x approaches infinity, -4^(-x) approaches 0.

0 + 5 = 5

Hi! Please help me im really confused >.< tysm
g² - 4g = -3

Answers

Answer:

g = 1, 3

General Formulas and Concepts:

Pre-Algebra

Equality Properties

Algebra I

Terms/CoefficientsFactoringSolving quadratics

Step-by-step explanation:

Step 1: Define

Identify

g² - 4g = -3

Step 2: Solve for g

[Addition Property of Equality] Add 3 on both sides:                                     g² - 4g + 3 = 0Factor:                                                                                                                (g - 1)(g - 3) = 0Solve:                                                                                                                 g = 1, 3

How do I do this question

Answers

Answer:

Graph:

Solution: (1, 1)

Check:

y = -3x +4

1 = -3 +4

1 = 1

y = 3x -2

1 = 3 -2

1 = 1

Maria's luggage travels 36 m in 3 minutes. What is the speed of the conveyer belt in kilometers per hour?

Answers

Answer:

0.72 km per hour

Step-by-step explanation:

First, find the speed in meters per hour. Create a proportion where x is this speed:

[tex]\frac{36}{3}[/tex] = [tex]\frac{x}{60}[/tex]

3x = 2160

x = 720

So, the speed is 720 meters per hour. Convert this to kilometers per hour by dividing 720 by 1000, since there are 1000 meters in a kilometer:

720/1000

= 0.72

So, the speed of the conveyer belt is 0.72 km per hour

What is the truth value for the following conditional statement?
p: true
q: true
~q —> ~p

Answers

I’m pretty sure it would be always

Find the image of -2 under the function f(x) =2x-1​

Answers

Answer:

- 5

Step-by-step explanation:

Substitute x = - 2 into f(x)

f(- 2) = 2(- 2) - 1 = - 4 - 1 = - 5

Whoever gives answer gets brainliest asap

Answers

Answer:

m=y2-y1/x2-x1 ⇒ m=-48+64/-15+21

m=16/6=8/3

y-y1/x-x1= m⇒ 8/3=y+64/x+21

8x+168=3y+192

    3y=8x-24

x-intercept

3(0)=8x-24

x=24/8 →x=3

x-intercept: (3,0)

OAmalOHopeO

Other Questions
If f(x)=7 find x=-3A.4B.-3C.7D.-4 How can we identify that the absorption of heat has occurred? The football coach randomly selected 10 players and timed how long each player took to perform a certain drill. The result has a sample mean of 9.48 minutes and sample standard deviation of 2.14 minutes. Round answers to two decimals. The 95% confidence interval for the mean time for all players is : __________ a treble clef is also know as what PLSSSSSSSSSSSSSS HELPPPPPPPPPPPP 9.A rocket is launched from the top of a 76-foot cliff with an initial velocity of 135 ft/s. a. Substitute the values into the vertical motion formula h = 16t2 + vt + c. Let h = 0. b. Use the quadratic formula to find out how long the rocket will take to hit the ground after it is launched. Round to the nearest tenth of a second.A. 0 = 16t2 + 135t + 76; 0.5 sB. 0 = 16t2 + 76t + 135; 9 sC. 0 = 16t2 + 76t + 135; 0.5 sD. 0 = 16t2 + 135t + 76; 9 s in the prince machiavelli argues that leaders maintain power through Which detail from the passage best shows why Anthony's motheris concerned about him?"Slamming the door shut, he strode into the kitchen, threwhis backpack on the floor, surveyed the neat pile ofingredients, and shook his head." (paragraph 2)"He had to start a new school in the middle of the year and heO was learning his way around the city just as I was."(paragraph 7)"And with that thought, I took my homemade casserole outO of the oven, ready to talk to Anthony about the possibility ofnew summer plans." (paragraph 20)"Don't you like my cooking, Anthony?' I asked with a mocklook of hurt on my face." (paragraph 5) Help Im trying to get my food handlers Give reasons. a. Troposphere is affected maximum by human activities. Week 3 Short Responses Question 3 The National American Woman Suffrage Association supported the U.S. decision to enter World War I and publicly encouraged women to support the war effort. Was this a necessary or a contributory cause of the success of the woman suffrage movement? PLSSS HELPPP! I will give brainliest and 11 points!! Which is the graph of the equation y- 1 =} (x 3)?10066 4(9,5)3.1)1-10-A-222 4 6 8 10 x4odwo106 Can someone look at my resume for my career class please and thank you! I also have the rubric and directions yall can look at too. Which landmark case will you useto as your primary example? 1) Terrance brought chocolates to school on Monday. Each day after Monday, he gave half of his chocolate pile away. On Friday, he had 3 chocolates left. How many chocolates did he start with on Monday?36 chocolates100 chocolates48 chocolates64 chocolates some of the World Heritage site from Nepal are under pressure how can they be saved from on natural disaster round 1.89 to one decimal place What unit of measurement would you use to measure the capacity of a juice box? find the value of a and b if [tex]5+3/7+23=a-b3[/tex]