Question

How do you simplify `4(5w^2 -2w)`?

Answer 1

Remove the common term, `w`, from within the parentheses:
`4(5w^2-2w) = 4w(5w-2)`

or, multiply the terms inside the parentheses by the `4` from outside
`4(5w^2-2w) = 20w^2-8w`

It really depends upon what you consider a better "simplification"

Answer 2

The answer is `4w(5w-2)`

You just have to collect `w`

`4(5w^2-2w)=4(5w*w-2*w)=4w(5w-2)` and you're done.