January 2019 1 43 Report
Liczba  \frac{2}{ \sqrt{7}- \sqrt{11} } jest równa :

A:  \frac{ -\sqrt{11}- \sqrt{7} }{2}

B:  \frac{ \sqrt{11} - \sqrt{7} }{2}

C:  \frac{ \sqrt{7} + \sqrt{11} }{2}

D:  \frac{ \sqrt{7} - \sqrt{11} }{2}

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