Question

How do you express `b^-15` as a positive exponent?

Answer 1

`1/b^15`

Explanation:

Put simply, a negative exponent just makes a variable go from the numerator to the denominator or vice versa.

A bit deeper, using the power property of exponents we know that `b^-15 = (b^15)^-1` and since `x^-1` means `1/x`, if we substitute `b^15` for x then we have our answer.