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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 ?
    (x^2 + 16)(x^2 - 16)
    = x^4 - 256

  • algebra1 -

    thats what I thought

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