# Math Help - rational expressions #5

1. ## rational expressions #5

i dont know what those trinomals factor into to become binomals

2. ## Re: rational expressions #5

The first step has to be to combine those two terms on the LHs as a single term.

3. ## Re: rational expressions #5

no i need them as binomals but i dont know what they would be, what would x^2 + x + 2 be factored out as to be in a (x ... )(x .... ) form as well as x^2 - 1

4. ## Re: rational expressions #5

Originally Posted by Mathnood768

i dont know what those trinomals factor into to become binomals
@Mathnood768, you have no idea how any of this actually works.

If $x\ne\pm 1$ then multiply both sides by $x^2-1$.
We get:
$\\(x-1)(x^2+x+2)-x(x^2-1)=x^2-5\\x^3+x-2-x^3+x=x^2-5\\2x-2=x^2-5$