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21 April, 01:12

When factored completely, the expression p^4-81 is equivalent to what?

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Answers (2)
  1. 21 April, 02:58
    0
    Differnce of 2 pefect squares

    a^2-b^2 = (a-b) (a+b)

    (p^2) ^2-9^2 = (p^2-9) (p^2+9)

    p^2-9 = (p-3) (p+3)

    factored is

    (p-3) (p+3) (p^2+9)
  2. 21 April, 03:44
    0
    Hello,

    p^4-3^4 = (p²+9) (p²-9) = (p-3) (p+3) (p²+9) [in R]

    [ (maybe (p-3) (p+3) (p-3i) (p+3i) in C]
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