Question

What is `(-5w^2-3w+1)+(-8w^2+3w-6)-(-3w^2+5w+8)`?

Answer 1

`10w^2 -5w-13`

Explanation:

These are 3 expressions - remove the brackets first.
Take care with the third term, the signs will change.

`(-5w^2-3w+1)+(-8w^2+3w-6)-(-3w^2+5w+8)`

=`-5w^2-3w+ 1 -8w^2+3w-6 + 3w^2-5w-8`

We can arrange them with like terms under each other.

`-5w^2-3w+ 1`
`-8w^2+3w-6`
`ul(+ 3w^2-5w-8)`
`-10w^2 -5w-13`