Obliczenia:
a)
\sqrt{0,5}*\sqrt2*\sqrt{2,5}*\sqrt5*\sqrt8=\sqrt{0,5*2*2,5*5*8}=\sqrt{100}=10
b)
\frac{\sqrt{0,23}}{\sqrt{23}}+(-1)^3*\sqrt{0,2}*\sqrt{0,5}*\sqrt{0,1}=\frac{\sqrt{\frac{23}{10^2}}}{\sqrt{23}}+(-1)*\sqrt{0,2*0,5*0,1}=\frac{\frac{1}{10}\sqrt{23}}{\sqrt23}-1*\sqrt{0,01}=0,1-1*0,1=0
c)
\sqrt[3]{(3\sqrt3)^2}=\sqrt[3]{3^2*3}=\sqrt[3]{3^{2+1}}=\sqrt[3]{3^3}=3
d)
\frac{2\sqrt{1,75}-\sqrt{63}}{\sqrt7}=\frac{2\sqrt{0,5^2*7}-\sqrt{9*7}}{\sqrt7}=\frac{2*0,5\sqrt7-3\sqrt7}{\sqrt7}=\frac{\sqrt7-3\sqrt7}{\sqrt7}=\frac{-2\sqrt7}{\sqrt7}=-2