December 2018 1 8 Report
Rozwiąż równania
a) 3x^{6} +4 x^{3} +1=0
b)x- \sqrt{x} -6=0
c)  x^{4} +2 x^{2} -15=0

2. Rozwiąż następujące układy równań
a) \left \{ {{y= x^{2} -4} \atop {y=2 x^{2}-10x+5 }} \right.
b) \left \{ {{y= x^{2} -2x+4} \atop {y= x^{2} -9x+18}} \right.
c)  \left \{ {{y=2 x^{2} +3} \atop {y=2x-4}} \right.
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