November 2018 2 15 Report

(2\sqrt{2}+1)*(2\sqrt{2}-1) = .......

(\sqrt{18} - \sqrt{5})* \sqrt{20}= .......

(5-2\sqrt{2})*(3-\sqrt{2})=.......

Trochę trudniejsze:

(\sqrt{5}-1)x^{2}=.....

PROSZĘ O POMOC !!!


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