September 2018 2 50 Report

Liczba \sqrt{20} + \sqrt{45} + \sqrt{80} - 2\sqrt{125} + \frac{1}{\sqrt{5}-2} jest równa:

a) \sqrt{5}+2

b) 3

c) 2\sqrt{5}-1

d) 2

Proszę o poprawną odp i jakieś drobne obliczenia.

pozdrowienia


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