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20 January, 11:07

Evaluate the expression for = - 3 and = 5.

r^{-4} s^2

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Answers (2)
  1. 20 January, 11:32
    0
    If r = - 3 and s = 5:

    (r^-4) (s^2) = (-3^-4) (5^2) = (1/81) (25) = 25/81

    If r = 5 and s = - 3:

    (r^-4) (s^2) = (5^-4) (3^2) = (1/625) (9) = 9/625
  2. 20 January, 12:22
    0
    If r = - 3 and s = 5:

    (r^-4) (s^2) = (-3^-4) (5^2) = (1/81) (25) = 25/81
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