Question

How do you multiply `(5x ^ { - 3} y ^ { 5} ) ^ { 2} * 2x ^ { - 4} y ^ { 5}`?

Answer 1

`50x^(-10)y^15 or (50y^15)/x^10`

Explanation:

Expand the bracket first

`(5x^(-3)y^5)^2=25x^(-6)y^10`

`25x^(-6)y^10xx 2x^-4y^5`

`50x^(-10)y^15 or (50y^15)/x^10`