algebra 2

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

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  1. 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

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