September 2018 1 20 Report

1.Podaj liczbę przeciwną do liczby x i lidczbę odwrotną do liczby y.

b) x=(1 \frac{1}{6}-\frac{1}{9}):(1\frac{1}{3}-\frac{1}{6}), y=(\frac{1}{7}-\frac{1}{3})*0.35-1\frac{1}{3}:(-1\frac{1}{2}).

2.Oblicz.

b) \sqr 5 i 1/4* \sqr 7/3.

3.Oblicz.

b)(2+\sqr3)^{2}-(2-\sqr3)^{2}

4.Dla liczb x=2-\sqr5 i y=2+\sqr5 oblicz iloraz x i y.


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