Question

How do you multiply and simplify `(-5x y ^ { 7} ) ^ { 3} ( - 2x ^ { 5} y ^ { 4} ) ^ { 2}`?

Answer 1

`-500=x^13 y^29`

Explanation:

`(-5xy^7)^3 -> -125x^3y^21`

`(-2x^5y^4)^2 -> 4x^10 y^8`

Multiplication of both would then be `-500 x^(10+3) y^(21+8)`

`-500=x^13 y^29`