Lesson 4.5: Division of Polynomials Answers

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If (x2 – 4) ÷ (x + 2) = x – 2, which polynomial should fill in the blank below?(x + 2) ´ ______ = x2 – 4

A
x2 – 4
B
x – 2
C
x + 2
D
x2 – 2
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The area of a rectangle is (x4 + 4x3 + 3x2 – 4x – 4), and the length of the rectangle is (x3 + 5x2 + 8x + 4). If area = length × width, what is the width of the rectangle?

A
x + 1
B
x – 9
C
x + 4
D
x – 1
3

What is the quotient of ?

Question illustration
A
x + 2
B
x - 2
C
x + 6
D
x - 6
4

The long division below shows the first term of the quotient. Which polynomial should be subtracted from the dividend first?

Question illustration
A
x + 3
B
x2 + x + 2
C
x3 + 2x2
D
x2 + 3x
5

The volume of a rectangular prism is (x3 – 3x2 + 5x – 3), and the area of its base is (x2 – 2). If the volume of a rectangular prism is the product of its base area and height, what is the height of the prism?

A
x minus 3 + StartFraction 7 x minus 9 Over x squared minus 2 EndFraction
Option A
B
x minus 3 + StartFraction 7 x minus 9 Over x cubed minus 3 x squared + 5 x minus 3 EndFraction
Option B
C
x minus 3 + StartFraction 7 x + 3 Over x squared minus 2 EndFraction
Option C
D
x minus 3 + StartFraction 7 x + 3 Over x cubed minus 3 x squared + 5 x minus 3 EndFraction
Option D
6

What is the quotient of ?

Question illustration
A
x + 2
B
x – 2
C
x – 8
D
x + 8
7

What is the remainder of the following division problem?

Question illustration
A
x
B
1
C
0
D
–1
8

What is the quotient of (x3 – 3x2 + 5x – 3) ÷ (x – 1)?

A
x2 – 2x – 3
B
x2 + 2x + 7
C
x2 – 3x + 8
D
x2 – 2x + 3
9

What is the first step of the following division problem?(8x3 – x2 + 6x + 7) ÷ (2x – 1)

A
Divide 8x3 by 2x.
B
Divide 2x by 8x3.
C
Divide 6x by 2x.
D
Divide 2x by 6x.
10

What is the quotient of (x3 + 8) ÷ (x + 2)?

A
x2 + 2x + 4
B
x2 – 2x + 4
C
x2 + 4
D
x2 – 4

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