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sasogeek

  • 3 years ago

what are the zeros of \(\large f(x) = x^4 - 16 \)

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  1. saifoo.khan
    • 3 years ago
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    x^4 = 16. Taking quad* root on both sides..

  2. hcmathkim
    • 3 years ago
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    -2 and 2

  3. Hero
    • 3 years ago
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    take 4th root of both sides, not quad root

  4. sasogeek
    • 3 years ago
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    hcmathkim, please don't answer snipe... especially with me :) thanks

  5. saifoo.khan
    • 3 years ago
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    |dw:1354760904793:dw|

  6. hcmathkim
    • 3 years ago
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    Set f(x) =0. 0 = (x^2 + 4) (x^2 - 4) = (x^2+4)(x+2)(x-2) . (x^2+4) > 0 always so x=-2, 2

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