Как решить 1) x2 – 5x + 6 = x2 – 3x – 2x + 6 = x(x – 3) – 2(x – 3) = (x – 3)(x – 2), 2) x2 – x – 2 = x2 – 2x + x – 2 = x (x – 2) + (x – 2) = (x – 2)(x + 1),
3) x2 – 2x – 3 = x2 – 3x + x – 3 = x (x – 3) + (x – 3) = (x – 3) (x + 1).
(x – 3)(x – 2)(x + 1)
я не :)
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