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

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Answer 1 · 2017-11-26T22:38:39

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

Multiply the two parts together.

You can separate it, if that’s easier.

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

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

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

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