How do you simplify x+ 2x - 9+ x ^ { 2} - 2- 3x + 2x ^ { 2} - 4- 3x?

1 Answer
Sep 15, 2017

Simplified: 3x^2-3x-15

Factored: 3(x^2-x-5).

Explanation:

The easiest thing to do here is put terms with similar powers together.

2x^2+x^2-3x-3x+2x+x-4-2-9

Simplify.
3x^2-3x-15

After that, if you wish to factorise you can factor out the 3.
3(x^2-x-5)

And then you're done!