December 2018 1 51 Report
Wyrażenie jest równe \ \frac{x-y}{ \sqrt{x}- \sqrt{y} }

A.
 \sqrt{x} + \sqrt{y}
B.
 \sqrt{x}+ \sqrt{y}
C.
 \sqrt{x-y}
D.
 \sqrt{x}- \sqrt{y}

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