# How do you find the zeros of # y = 3x^2 - 13x +15 # using the quadratic formula?

##### 1 Answer

Aug 15, 2017

This sucker has complex roots!

#### Explanation:

The quadratic Formula is:

Plugging in A = 3, B = -13, C = 15 gives you:

or

Which is your problem, since there is no square root of a negative number.

Best you can do is rewrite it as a COMPLEX number of form

So you can do a little rewrite of

And then evaluate it once for the positive case of the

And

(Note that I've rounded off.