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Polynomial Operations — Test Answers

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What is the completely factored form of x squared minus 16 x y plus 64 y squared ?

A
open paren x plus 8 y close paren times open paren x plus 8 y close paren
B
x y open paren x minus 16 plus 64 y close paren
C
x y open paren x plus 16 plus 64 y close paren
D
open paren x minus 8 y close paren times open paren x minus 8 y close paren
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Which statement about the simplified binomial expansion of open paren A minus b close paren to the n th power , where n is a positive integer, is true?

A
All terms in the expansion are negative.
B
The first term in the expansion is negative.
C
The first term in the expansion is positive.
D
All terms in the expansion are positive.
25

What expression is equivalent to open paren 5 z squared plus 3 z plus 2 close paren squared ?

A
25 z to the 4th power plus 30 z cubed plus 19 z squared plus 12 z plus 4
B
5 z to the 4th power plus 9 z squared plus 4
C
5 z to the 4th power plus 3 z squared plus 4
D
25 z to the 4th power plus 30 z cubed plus 29 z squared plus 12 z plus 4

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