Unit Test Answers

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1
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The polynomial x3 + 64 is an example of a .

A
sum of cubes
B
difference of cubes
C
difference of squares
D
perfect-square trinomial
2
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What is the factored form of x3 + 64?

A
(x2 + 8)(x + 8)
B
(x + 4)(x2 – 4x + 16)
C
(x – 4)(x2 + 4x + 16)
3

Factor out the common factor.

A
2x4 + 5x3 – 8x –20
B
(x3 + 4)(–2x – 5)
C
(x3 – 4)(2x + 5)
D
(x3 + 4)(2x + 5)

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