# How do you solve #7x^2+5x+8=0# using the quadratic formula?

##### 1 Answer

Jul 31, 2016

No real roots.

#### Explanation:

Use the new quadratic formula in graphic form (Socratic Search)

y = 7x^2 + 5x + 8 = 0

D = d^2 = b^2 - 4ac = 25 - 224 = - 199 < 0

Because D < 0, there are no real roots.

Note. There are 2 complex roots.