December 2018 1 13 Report
Rozwiąż równania:
a)2 x^{2} -7x=-30-2x(1-x)
b)2(x+2)(x-2)=0
c)2 x^{2} -1\frac{2}{3} x-1\frac{1}{3} =0
d)(2x+1) ^{2} -9(x-1) ^{2} =4-x
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