x2 + 4x - 32 = (x + 8)*(x - 4)
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x2+4x-32 = (x-4)(x+8) when factored
x2+4x+4 = 25 x2+4x+4-25 = 0 x2+4x-21 = 0 (x+7)(x-3) = 0 x = -7 or x = 3
x2 + 4x + 6 can not be factored. If you want, you can reduce it to an expression with a single x term by comleting the square: x2 + 4x + 6 = x2 + 4x + 4 + 2 = (x + 2)2 + 2
x2 + 4x - 96 = (x - 8)(x + 12).
4x+8