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28 August, 17:20

Given T (x) = x^4

Find x when T (x) = 81

(HINT: There are two values!)

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Answers (2)
  1. 28 August, 17:35
    0
    3 and - 3
  2. 28 August, 17:44
    0
    The solutions are 3 and - 3.

    Step-by-step explanation:

    T (x) = x^4=81

    x=3 because 3^4=3*3*3*3=81 and

    x=-3, (-3) ^4 = (-3) (-3) (-3) (-3) = 81
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