Question

How do you solve `-x^2-4x` if `x=-3`?

Answer 1

`3`

Explanation:

Well in an expression, when you are given the value of something you first start by replacing all the terms with the value eg.

`-(-3^2)-(4xx-3)`

And from there you just have to cancel it out.

`-9-(-12)`

`-9+12`

`3`