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19 April, 09:03

Which expression is equivalent to (3^2) ^-2

a. - 81

b. - 12

c. 1/81

d. 1/12

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Answers (1)
  1. 19 April, 10:37
    0
    C. 1/81

    First simplify what's in the parenthesis

    (3^2) = 9

    Now your answer is:

    9^-2

    but there is no such thing as a negative exponent so write the expression as a fraction

    1/9^2

    and simply simplify so your answer is

    1/81
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