AnswersFL-1200710-Mathematics for College Algebra APolynomial Division

Polynomial Division — Unit test Answers

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21
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Which is a factor of x2 + 5x − 24?

A
(x − 6)
B
(x + 6)
C
(x − 8)
D
(x + 8)
22
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Which product of prime polynomials is equivalent to 4x5 – 6x4 + 4x3 – 6x2?

A
2x2(x2 + 1)(2x – 3)
B
2x2(x2 – 1)(2x + 3)
C
x2(x2 + 1)(2x – 3)
D
2(x2 – 1)(2x + 3)
23

Which monomial is a perfect cube?

A
1x10
B
8x8
C
9x9
D
27x15
24

Which polynomial is prime?

A
x2 + x + 1
B
x2 – x – 2
C
x2 – 12x + 11
D
x2 + 2x – 8
25

Omar grouped the terms and factored the GCF out of the groups of the polynomial 3x3 – 15x2 – 4x + 20. His work is shown.Step 1: (3x3 – 15x2) + (–4x + 20)Step 2: 3x2(x – 5) + 4(–x + 5)

A
Omar should realize that his work shows that the polynomial is prime.
B
Omar should go back and regroup the terms in Step 1 as (3x3 – 15x2) – (4x + 20).
C
In Step 2, Omar should factor only out of the first expression.
D
Omar should factor out a negative from one of the groups so the binomials will be the same.

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