September 2018 2 30 Report
Rozwiąż równani nierówności:
a) x²-4x+4=0
b) x²-169=0
c) x² + 6c + 6≥0
d) (x-1) ( x+1) + ( x - 2 )² < x(x-4)
e) -x²+2x-3>0
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