hmstar1 hmstar1

05-12-2017
Mathematics

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which factor do 64x^2 + 48x + 9 and 64x^2 - 9 have in common?

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altavistard altavistard

05-12-2017

Start with the second expression. That factors easily into (8x-3)(8x+3).
Since 64x^2 + 48x + 9 has no negative signs, I'd bet that the common factor is (8x+3). Divide 64x^2 + 48x + 9 by that to verify.

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