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4x+8
x2 + 4x = 1 x2 + 4x - 1 = 0 in the quadratic formula (b2+- Sqr(4ac))/2a, a = 1 b = 4 c = -1 so x = 8 +- i
x2 + 4x - 96 = (x - 8)(x + 12).
x2 + 4x - 32 = (x + 8)*(x - 4)
x2+4x-32 = (x-4)(x+8) when factored