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8 October, 04:53

5^ (-7) * 5^ (12) * 5^ (-2)

with steps

+3
Answers (2)
  1. 8 October, 04:59
    0
    =125

    Step-by-step explanation:

    5-7) (512) (5-2)

    =

    1

    78125

    (512) (5-2)

    =

    1

    78125

    (512) (5-2)

    = (

    1

    78125

    (244140625)) (5-2)

    =3125 (5-2)

    =3125 (

    1

    25

    )

    =125
  2. 8 October, 05:16
    0
    125

    Step-by-step explanation:

    in any exponential multiplication, the exponents add together

    x^y X x^y = x^2y

    so 5^-7 X 5^12 X 5^-2 is equal to 5^ (-7+12-2) = 5^3

    5^3 = 5 X 5 X 5 = 25 X 5 = 125
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