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OpenStudy (anonymous):
49c^2-64=
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OpenStudy (solomonzelman):
(7c-8)(7c+8) this is a difference of perfect squares, 8^2=64 and (7c)^2=49c^2
OpenStudy (solomonzelman):
so it is (7c-8)(7c+8)
OpenStudy (solomonzelman):
@tdmims45 do you understand?
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