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Worksheets

Operations on Polynomials

Total questions: 23

Worksheet time: 2hrs 42mins

Name
Class
Date
1.

Perform the division.

4x328x229x24x8\frac{4x^3-28x^2-29x-24}{x-8}  

a)

4x2+4x+34x^2+4x+3  

b)

4x24x34x^2-4x-3  

c)

4x2+4x34x^2+4x-3  

d)

4x24x+34x^2-4x+3  

2.

Use synthetic division to find the quotient and the remainder.

x5+7x4+7x313x2+7x13x+5\frac{x^5+7x^4+7x^3-13x^2+7x-13}{x+5}  

a)

Quotient

x42x3+3x2+2x3x^4-2x^3+3x^2+2x-3

 Remainder 2-2  

b)

Quotient

x4+2x33x2+2x3x^4+2x^3-3x^2+2x-3

 Remainder 22  

c)

Quotient

x42x3+3x22x+3x^4-2x^3+3x^2-2x+3  

Remainder 22  

d)

Quotient

x4+2x33x2+2x3x^4+2x^3-3x^2+2x-3

 Remainder

2-2  

3.

Use Long Division or Synthetic Division

 x4+625x5\frac{x^4+625}{x-5}  

a)

 x3+5x2+25x125+1250x5x^3+5x^2+25x-125+\frac{1250}{x-5}  

b)

 x35x2+25x125+1250x5x^3-5x^2+25x-125+\frac{1250}{x-5} 

c)

 x3+5x225x+1251250x5x^3+5x^2-25x+125-\frac{1250}{x-5} 

d)

 x3+5x2+25x+125+1250x5x^3+5x^2+25x+125+\frac{1250}{x-5} 

4.

The 3rd term in the expression of (7x+8)3\left(7x+8\right)^3  is

a)

1344x1344x  

b)

1344x-1344x  

c)

1344x21344x^2  

d)

1434x1434x  

5.

You divide two polynomials and obtain the result

x23+6x+1x^2-3+\frac{6}{x+1}  

What is the dividend?

a)

x3+x23x+3x^3+x^2-3x+3  

b)

x3+x23x3x^3+x^2-3x-3  

c)

x3x23x+3x^3-x^2-3x+3  

d)

x3x23x3x^3-x^2-3x-3  

6.

A box with an open top is formed by cutting squares out of the corners of a rectangular piece of cardboard and then folding up the sides. If x represents the length of the side of the square cut from each corner, and if the original piece of cardboard is 14 inches by 13 inches, what size square must be cut if the volume of the box is to be 168 cubic inches?

a)

2in by 2in square2in\ by\ 2in\ square  

b)

3in by 3in square3in\ by\ 3in\ square  

c)

4in by 4in square4in\ by\ 4in\ square  

d)

5in by 5in square5in\ by\ 5in\ square  

7.

Use synthetic division to find the function value.

f(x)=x32x22x1, find f(3)f\left(x\right)=x^3-2x^2-2x-1,\ find\ f\left(-3\right)  

a)

40-40  

b)

4040  

c)

3030  

d)

30-30  

8.

Use synthetic division to find the quotient and the remainder.

6x55x4+x4x+12\frac{6x^5-5x^4+x-4}{x+\frac{1}{2}}  

a)

6x48x3+4x22x+26x^4-8x^3+4x^2-2x+2 Remainder 5Remainder\ -5   

b)

6x4+8x34x2+2x+26x^4+8x^3-4x^2+2x+2   Remainder 5Remainder\ 5  

c)

6x48x3+4x22x+26x^4-8x^3+4x^2-2x+2   Remainder 2Remainder\ -2  

d)

6x4+8x34x22x+26x^4+8x^3-4x^2-2x+2   Remainder 2Remainder\ -2  

9.

Expand the expression using the Binomial Theorem. (Pascal's Triangle)

(ws)6\left(w-s\right)^6  . What is the 4th term of the expression?

a)

20w3s320w^3s^3  

b)

20w3s3-20w^3s^3  

c)

20w4s2-20w^4s^2  

d)

20w2s4-20w^2s^4  

10.

A rectangular patio has an area of 3m3+19m2+m  633m^3+19m^2+m\ -\ 63   Find the length if the width is 3m+73m+7  

a)

m2+4m9m^2+4m-9  

b)

m24m+9m^2-4m+9  

c)

m24m9m^2-4m-9  

d)

m2+4m+9m^2+4m+9  

11.

What is the remainder when (x13 + 10) is divided by (x + 1)?

a)

9

b)

10

c)

11

12.

The expression x3kx2+2x+5x^3-kx^2+2x+5  leaves a remainder of 2 when divided by x3x-3  . Find the value of k.

a)

4

b)

-4

c)

8

d)

-8

13.

What is the proper way to write the answer (Quotient) for the following problem? 

a)

2x3x225x  122x^3-x^2-25x\ -\ 12  

b)

2x4x325x212x+02x^4-x^3-25x^2-12x+0  

c)

2x4+x325x2  12x+02x^4+x^3-25x^2\ -\ 12x+0  

d)

2x4x3+25x212x+02x^4-x^3+25x^2-12x+0  

14.

What is the value of k such that (x3+kx29x36)÷(x+4)\left(x^3+kx^2-9x-36\right)\div\left(x+4\right)  has a remainder of zero?

a)

44  

b)

4-4  

c)

14\frac{1}{4}  

d)

14-\frac{1}{4}  

15.

A population of birds in a small county can be modeled by the polynomial f(x)=x357x2+1162x+1094f\left(x\right)=x^3-57x^2+1162x+1094   where x = 1 corresponds to July 1, x = 2 to July 2, and so on. For what days does f estimate the population to be 8550?

a)

July 11th

b)

July 12th

c)

July 13th

d)

July 14th

16.

Use long division to find the quotient and the remainder

x4+4x34x217x+30x2+3x2\frac{x^4+4x^3-4x^2-17x+30}{x^2+3x-2}  

a)

(x2+x+5) R 20\left(x^2+x+5\right)\ R\ 20  

b)

(x2x+5) R 20\left(x^2-x+5\right)\ R\ 20  

c)

(x2x5) R 20\left(x^2-x-5\right)\ R\ -20  

d)

(x2+x5) R 20\left(x^2+x-5\right)\ R\ 20  

17.

Use long division to find the quotient and the remainder

8t4+10t3+20t2+9t+302t2+4t+5\frac{8t^4+10t^3+20t^2+9t+30}{2t^2+4t+5}  

a)

(4t23t+6) R 0\left(4t^2-3t+6\right)\ R\ 0  

b)

(4t2+3t+6) R 12\left(4t^2+3t+6\right)\ R\ 12  

c)

(4t23t6) R 2\left(4t^2-3t-6\right)\ R\ 2  

d)

(4t23t+6) R 12\left(4t^2-3t+6\right)\ R\ 12  

18.

The volume of a box is 3p4+12p3+12p23p^4+12p^3+12p^2  The height is pp   and the width is p+2p+2   What is the length?

a)

3p2+6p3p^2+6p  

b)

3p26p3p^2-6p  

c)

3p2+6p-3p^2+6p  

d)

3p26p-3p^2-6p  

19.

If a submarine goes 2k3+14k2+10k422k^3+14k^2+10k-42   miles in 2k+62k+6   hours, what is its rate of speed?

a)

k24k7 mileshourk^2-4k-7\ \frac{miles}{hour}  

b)

k2+4k7 mileshourk^2+4k-7\ \frac{miles}{hour}  

c)

k2+4k+7 mileshourk^2+4k+7\ \frac{miles}{hour}  

d)

k24k+7 mileshourk^2-4k+7\ \frac{miles}{hour}  

20.

What polynomial, when divided by 4a3x5-4a^3x^5  , yields 7a6x712x46a7a^6x^7-12x^4-6a   as a quotient?

a)

28a9x12+48a3x9+24a4x5-28a^9x^{12}+48a^3x^9+24a^4x^5  

b)

28a9x12+48a3x9+24a4x528a^9x^{12}+48a^3x^9+24a^4x^5  

c)

28a9x1248a3x9+24a4x5-28a^9x^{12}-48a^3x^9+24a^4x^5  

d)

28a9x12+48a3x924a4x5-28a^9x^{12}+48a^3x^9-24a^4x^5  

21.

Determine whether x4x-4  is a factor of f(x)=x52x3+4x+1f\left(x\right)=x^5-2x^3+4x+1  

a)

Yes, because the remainder is 0

b)

Yes, because the remainder is not equals to 0

c)

No, because the remainder is 0

d)

No, because the remainder is not equals 0

22.

Factor completely: x64x545x4x^6-4x^5-45x^4  

a)

x4(x24x45)x^4\left(x^2-4x-45\right)_{ }  

b)

x4(x5)(x+9)x^4\left(x-5\right)\left(x+9\right)  

c)

x4(x5)(x9)x^4\left(x-5\right)\left(x-9\right)  

d)

x4(x+5)(x9)x^4\left(x+5\right)\left(x-9\right)  

23.

Factor completely:

81p462581p^4-625  

a)

(9p225)(9p2+25)\left(9p^2-25\right)\left(9p^2+25\right)  

b)

(9p2+25)(9p2+25)\left(9p^2+25\right)\left(9p^2+25\right)  

c)

(3p5)(3p+5)(9p2+25)\left(3p-5\right)\left(3p+5\right)\left(9p^2+25\right)  

d)

(3p5)(3p+5)(3p+5)(3p+5)\left(3p-5\right)\left(3p+5\right)\left(3p+5\right)\left(3p+5\right)