x3 - 2x2 + x - 2
=(x - 2)(x2 + 1)
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y = x2 - 4x + 4 can be factored into y = (x-2)(x-2) The repeated factor is 2.
(x2 + 1)(x - 3)
-3
x3 + x2 + 4x + 4 = (x2 + 4)(x + 1)
x3 + 5x2 - x - 5 = (x2 - 1)(x + 5) = (x + 1)(x - 1)(x + 5)