October 2018 1 31 Report

1.Oblicz:

a)\frac{8-(-2\frac{1}{2}) }{1\frac{4}{5}: \frac{14}{15}-2 } =

b)\frac{\frac{3}{5}:\frac{9}{10}-2\frac{1}{5}:(-1,1) }{(2\frac{1}{3}-\frac{3}{4})*2\frac{2}{5} } =

c) \frac{1}{6}*\frac{(-3)^2}{0,5}+\frac{(-2)^2}{0,3}:(-1\frac{7}{9})=

d)\frac{-4,5*\frac{2}{9}-1,6}{-0,6*(-1,5)-(4,4:0,4)}=

e)\frac{2\frac{1}{3}-3\frac{1}{2} }{3}:(\frac{5}{12}-\frac{5}{6})=

2.Oblicz:
a) (√6*√15)/(√250)=
b)(√25*√75)/√28)=
c)2√18+√50=
d)2√20-7√45=

3.Wykonaj działania,korzystając ze wzorów skróconego mnożenia:
a) (2√2-√6)^2=
b)√21+√3)^2=
c)(√21-√20)(√21+√20)=
d)(1)/(1-√2)*(1)/(1+√2)=


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