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Anonymous
-(x - 7)(x + 2)
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x2 + 5x - 120 can not be factored.
x2 + 5x + 6 = (x + 2)(x + 3)
(3x - 5x) + (x2 - 6x2) = -2x -5x2 = -x(2 + 5x)
x2 + 5x + 3 = 9 x2 + 5x - 6 = 0 (x + 6)(x - 1) = 0 x = -6 or x = 1
5x+x >100