# How do you solve #x(x+6)=-15# using the quadratic formula?

##### 1 Answer

Oct 25, 2017

No real solutions, x>0

#### Explanation:

Expand boiii

We have -15, bring that over to make + 15

so the equation is

collect terms for the quadratic formula

a is the number in front of

b is the number in front of

c is the number without an

a = 1

b = 6

c = 15

remember minuses matter, however there are none in this question.

so plug it in

put into your calculator as is, i'd suggest one from here: https://goo.gl/JtHwiA they are brilliant. (Casio 991ex)

This leaves a negative number in your square root, which means imaginary numbers.. No real solution is obtainable