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7 to the power of - 2

7 to the power of - 4

could you show me how you get 49 as the naswer...the long line shows that you need to divide both of them

  • Math - ,

    If you see a negative exponent in the numerator, it is the reciprocal of the number without the negative sign in the exponent. Namely:

    A-b = 1/Ab
    1/A-b = Ab

    7-2 / 7-4
    =74 / 72

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