monirueda76 monirueda76

28-02-2018
Mathematics

contestada

what is the factorization of 49b^2 - 81 ?
A - (7b-9)(7b-9)
B - (7b-9(b2^+9)
C - (7b2^-9)(7b2^-9)
D - (7b2^-9)(7b2^+9)

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KanekiKen3 KanekiKen3

28-02-2018

none of these answers are correct. are you sure these are your answer choices?

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feynman135 feynman135

28-02-2018

The answer is (7b+9)(7b-9), so whichever letter that corresponds to.

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