Given:
[tex]\text{ }\frac{5}{b^{-2}}[/tex]
Recall the following rule: The negative exponent rule tells us that a number with a negative exponent should be put to the denominator, and vice versa.
Since b^-2 is in the denominator, we will now be putting it into the denominator and remove the negative sign.
We get,
[tex]\text{ }\frac{5}{b^{-2}}=\frac{5b^2}{1}=5b^2[/tex]
The answer is:
[tex]5b^2[/tex]
