so the exuation is :

2x^2+18x+40

I know I have to common factor first, but I don't know exaclly where to go from there. It's grade 10 accademic math..I duuno if that means anything?

so I put it so it was like this:

2(x^2+9x+20)

and I duuno where to go from there?

Any help would be appreciated.