solve for x
(x-4)(x+2)=40
you need to make it eaqual to 0 and the correct answer is 8 and -6. how do i get this answer
expand first, simplify and then factor again
x^2 - 2x - 8 - 40 = 0
x^2 - 2x - 48 = 0
(x+6)(x-8) = 0
etc, I am sure you can see it from here