April 2019 0 24 Report
Rozwiaz nierownosci kwadratowe
a. \: \: \: {x}^{2} - 4 < 0
b. \: \: \: - {x}^{2} + 9 \leqslant 0
c. \: \: \: - {x}^{2} + 16 > 0
d. \: \: \: 2 {x}^{2} - 50 \geqslant 0




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