Factor the expression completely, if possible.x2 - 81

A. (x - 9)2
B. (x + 9)(x - 9)
C. (x + 9)2
D. Does not factor


Answer: B

Mathematics

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A.

B.

C.

D.

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Identify the GCF of the group of terms.54x2, 45x3, and 72x4

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Mathematics