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x2 -4x - 12 = (x + 2)(x - 6)
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x2-4x-12 = (x-6)(x+2) when factored
x2 + 4x - 96 = (x - 8)(x + 12).
x2+4x-12 = (x-2)(x+6) when factored
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x2+4x-9 = 5x+3 x2+4x-5x-9-3 = 0 x2-x-12 = 0 (x+3)(x-4) = 0 x = -3 or x = 4