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rozwiąż nierówność:
(3-x)²>2-x(6-x)
3do kw-x do kw. > 2- 6x +x do kw
9 - x do kw >2 - 6x +x do kw.
6x>2-9
6x>-7 /:6
x> - 1 i jedna szósta