February 2019 0 14 Report
Rozwiąż nierówności kwadratowe:
- (1 - x)(-x + 2) \ \textless \ 0
- x^{2} - 6x - 9 \ \textless \ 0
2x \leq 1/2 x^{2}
9 x^{2} + 1 \ \textgreater \ 0


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