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13 August, 09:52

X^-9*x^-2

a 1/x^18

b 1/x^11

c x^18

d x^11

+4
Answers (1)
  1. 13 August, 11:29
    0
    Exponent rule : a^-x = 1/a^x

    x^-9 * x^-2 =

    1/x^9 * 1/x^2 = (when multiplying exponents with same base, add exponents)

    1/x^ (9 + 2) =

    1/x^11
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