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March 30, 2017

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find all the real zeros and multiplicity of
f(x)=x^4-68x^2+256

  • precalccc - ,

    x^4 - 68x^2 + 256 = 0
    (x^2-64)(x^2-4) = 0
    x = ± 8 or x = ± 2

    take it from there

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