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ACCUPLACER
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Perfect-Square Trinomials
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ACCUPLACER
AAF.036 Perfect-Square Trinomials
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For 9a
4b
2
+ 48a
2bc
2
+ 64c
4
, which option gives both the squared-binomial factorization and the required middle-term sign?
A
(3a
2b
+ 8c
2
)
2
; the middle term is positive.
B
(3a
2b
- 8c
2
)
2
; the middle term is negative.
C
(3a
2b
+ 10c
2
)
2
; the middle term is positive.
D
(3a
2b
+ 8c
2
)
2
; the middle term is negative.
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