November 2018 2 77 Report
Która równość jest prawdziwa:
a)  \frac{ \sqrt{2} -1}{ \sqrt{2}+1 } = ( \sqrt{2}+1)( \sqrt{2}-1)

b)  \frac{ \sqrt{2}+1}{ \sqrt{2}-1 } = ( \sqrt{2}+1)( \sqrt{2}-1)

c)  \frac{ \sqrt{2} -1}{ \sqrt{2}+1 } = ( \sqrt{2})^{2} - 1^{2}

d)  \frac{ \sqrt{2}+1}{ \sqrt{2}-1 } = ( \sqrt{2} +1)^{2}

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