x^2 + 2x - 8 = 0
x^2 + 2x = 8
(x + 1)^2 = 8 + 1
(x + 1)^2 = 9
x + 1 = 3
x = 2.
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x^2 + 2x - 8 = 0
x^2 + 2x = 8
(x + 1)^2 = 8 + 1
(x + 1)^2 = 9
x + 1 = 3
x = 2.