October 2018 2 50 Report

Rozwiąż równanie i nierównosć:

a)(2x-1)^{2}- (2x+1)^{2}=x^{2} to pewnie wzorem a2+2ab+b2

b)x^{2}\geq2-x i tu trzeba x1,x2,delte i parabolę.

Dzięki!!!!!!


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