For the equation x2 + 2x - 8 = 0, what is the sum of the solutions?

-2

Step-by-step explanation:

x^2 + 2x - 8 = 0

What 2 numbers multiply to - 8 and add to 2

4*-2 = - 8

4-2 = 2

(x+4) (x-2) = 0

Using the zero product property

x+4 = 0 x-2=0

x+4-4 = 0-4 x-2+2=0+2

x = - 4 x=2

We want the sum of the solutions

-4+2 = - 2