# How do you solve #15x^2+7x-55# using the quadratic formula?

##### 1 Answer

May 5, 2016

#### Explanation:

Strictly speaking, I guess you would like to solve

That having been said, the *equation*

This has roots (solutions) given by the quadratic formula:

#x = (-b+-sqrt(b^2-4ac))/(2a)#

#=(-7+-sqrt((-7)^2-(4*15*(-55))))/(2*15)#

#=(-7+-sqrt(49+3300))/30#

#=(-7+-sqrt(3349))/30#

The square root