# Is it possible to factor #y=9x^2 - 17x - 85#? If so, what are the factors?

##### 1 Answer

Jun 11, 2017

To check if it is possible to factorize a square trinomial you have to calculate the determinant:

#Delta = b^2-4ac#

Here we have:

The discriminant is negative, so the trinomial has no roots (i.e. it cannot be factorized)