Question

How do you multiply `4w ^ { 9} \cdot 2u ^ { 7} u ^ { - 3} w v ^ { - 9} \cdot 7v ^ { 8}`?

Answer 1

`=(56u^4w^10)/v`

Explanation:

`4w^9*2u^7u^-3wv^-9*7v^8`

Multiply the numbers and the add the indices of like bases:

`=56*color(red)(u^7u^-3)*color(blue)(v^-9v^8)*color(green)(w^9w)`

`=56u^4v^-1w^10`

Answers are given without negative indices..

`=(56u^4w^10)/v`