Question

How do you evaluate `(5x ^ { 2} z ^ { 3} - 9z ^ { 4} ) ( - 2x ^ { 6} z )`?

Answer 1

`-10x^8z^4+18xz^5`

Explanation:

Multiply the two parts together.

You can separate it, if that’s easier.

`=(5x^2z^3)(-2x^6z) - (9z^4)(-2x^6z)`

`=(-10x^8z^4) - (-18xz^5)`

`=(-10x^8z^4+18xz^5)`