Question

factor the trinomial completely x^2+9x+53

Answer 1

It's not factorable...

Answer 2

You can prove it by using the quadratic formula, if you've learned that.

Answer 3

I couldn't figure this out for anything.... the last one I understood it once I was shown, thanks

Answer 4

I definitely didnt understand the quadratic formula

Answer 5

Well part of the formula is b^2-4ac. Some teachers call it "delta". If that value is less than 0, then you can't factor it. If you calculate b^2-4ac here you get

9^2 - 4(1)(53) = 81-212 which is less than 0 so you can't factor it!