1) x(x – 4) = 2 + (x - 1)”;
3) y(5 - y) = 1 -(y + 2)";
2) (x + 2)(x – 3) – 3 = (x + 1)”;
4) (y - 1)2 – (y + 1)(y – 7) = 0.
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serjksu    1   28.01.2020 11:57    0