# How do you factor and solve #9x^2 + 7x - 56 = 0#?

##### 1 Answer

Jul 4, 2016

(-7 +- sqrt2065)/18

#### Explanation:

Since D is not a perfect square, this function can't be factored.

Solve f(x) = 0 by the improved quadratic formula.

There are 2 real roots: