September 2018 1 17 Report

Oblicz wartość wyrażenia:

a) (2x-1)^{2}-(2x-1)(1+2x)-(2x+1)^{2}/ dla/ x=\sqrt{2}

b) (\sqrt{5}+x)^{2}-(\sqrt{5}-x)^{2}+(x+\sqrt{5})(\sqrt{5}-x) =

dla x=\sqrt{5}-1


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