January 2019 1 21 Report
Rozwiąż równania i nierówności.

(2x + 5)^{2} -x (x + 20) = 0

(2x - 1)(2x + 1) + 2 = 9x - 5x(x + 3)

-3(x - 2)(x + 4) > 0

-5(x - \sqrt{2})(x + 3 \sqrt{2} \geq 0

Proszę razem z obliczeniami ;)

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