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Math

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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
    or
    1/A-b = Ab

    Therefore
    7-2 / 7-4
    =74 / 72
    =?

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