November 2018 1 473 Report
Zapisz liczby x= 0,(3) i y = 1, (3) jako ułamki zwykłe i oblicz:
a)  \frac{1}{x} +  \frac{1}{y}
b) x^{2} -  \frac{1}{ y^{2} }
c)  \frac{1}{ x^{2} } +  \frac{1}{ y^{2} }

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