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posted by katelynn on Monday, February 13, 2012 at 5:48pm.

how do I simplify (x^2+16)(x^2-16)?

I see the pattern of "difference of squares" Did you know that (a+b)(a-b)= a^2- b^2 ? so (x^2 + 16)(x^2 - 16) = x^4 - 256

thats what I thought

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