x3 + 2x2 - 35x = x(x + 7)(x - 5)
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x3 + 2x2 - 8x + 5 = 0 x(2x - 8) + 5 = 0
Factor out an X X(X^2 - 12X + 35) factor quadratic equation X(X - 7)(X - 5) ------------------- fully factored
x3 + 2x2 + 3x + 6 = x2(x + 2) + 3(x + 2) = (x + 2)(x2 + 3)
(x + 2)(x^2+4)
x3 + 13x2 + 42x = x(x + 6)(x + 7).