Yanal K. answered • 11/16/14

Tutor

New to Wyzant
Energetic & Fun University Student for Mathematics

Hello Jay,

The answer should be C if the problem is correctly was properly written.

We start out with (3x^-4)^2 * (5x^-2) which we can simplify.

We do (3x^-4)^2 first and simplify it by squaring the number and term which gives us 9x^-8 which is then multiplied by the rest of the equation, (5x^-2).

This gives us:

(9x^-8)(5x^-2) = 45x^-10 or 45/x^10 which is C.

We multiply the numbers and add the exponents to get 45x^-10 and we know that to make the exponent positive, we move it down to the denominator so it becomes 45 / x^10.

I hope you get it now. :)