x3 - 7x2 + 6x
= x(x2 - 7x + 6)
= x(x2 - x - 6x + 6)
= x[x(x - 1) - 6(x - 1)]
= x2(x - 1) - 6x(x - 1)
= (x2 - 6x)(x - 1)
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x3 - 7x2 + 6x =x (x2 - 7x + 6) =x (x - 6) (x - 1)
x3 + 4x2 + 6x + 24 = (x2 + 6)(x + 4)
x3 + x2 - 6x + 4 = (x - 1)(x2 + 2x - 4)
(x + 5)(x^2 + 2x + 2)
x3 + 13x2 + 42x = x(x2 + 13x + 42) = x(x2 + 6x + 7x + 42) = x[x(x + 6) + 7(x + 6)] = x(x + 7)(x + 6)