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Factor completely 9x^2-64 A. (3x-8)^2 B. (3x+8)(3x-8) C. (3x+8)(3x+8) D. (9x-8)^2
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5 votes
Factor completely 9x^2-64

A. (3x-8)^2
B. (3x+8)(3x-8)
C. (3x+8)(3x+8)
D. (9x-8)^2

User John Greene
by
8.3k points

1 Answer

7 votes
B.

You can factor these by finding the square roots of the end terms and then using +/- in the middle of each one.
User Bar Gans
by
8.3k points
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