Solve by graphing. x2 2x - 8 = 0

a. - 2, 4

b. 2, - 4

c. 2, - 4

d. - 2, 4

Well, to solve, garph the equation y=x^2+2x-8 and y=0

see where they intersect

anyway the easier way is to factor but anyway

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

anyway

solution is x=4 and - 2

A and D are answers (they are same)