Question

Which shows the following expression after the negative exponents have been eliminated?

Answer 1

Choice B is correct

Explanation:

Using the properties of exponents the expression can be simplified so as to eliminate the negative powers;

`a^(-2)=(1)/(a^(2) )`

This component thus shifts to the denominator

`a^(-7)=(1)/(a^(7) )`

This component thus shifts to the numerator

`b^(-1)=(1)/(b)`

This component thus shifts to the numerator

The final simplified expression is thus B