Find the reciprocal of the positive exponent.
Thus, x-a = 1/xa
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You evaluate the powers of 10 and a exponent of positive 4.
negative 4 with negative 3 as an exponent
the exponent is a negative
A number to a negative exponent is the inverse of the number to the positive exponent. That is, x-a = 1/xa
If you have a negative exponent, then put 1/the number multiplied by itself the number of times of the exponent. For example: 3-2=1/(3x3)=1/9