# algebra1

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

• algebra1 -

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

• algebra1 -

thats what I thought

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