a) [tex]\sqrt{0,25*0,64*0,09}=\sqrt{0,25}*\sqrt{0,64}*\sqrt{0,09}=0,5*0,8*0,3=0,12[/tex]
b) [tex]\sqrt{0,04*169*25}=\sqrt{0,04}*\sqrt{169}*\sqrt{25}=0,2*13*5=13[/tex]
c) [tex]\sqrt{0,32}*\sqrt{0,4}*\sqrt{0,5}*\sqrt{1000}=\sqrt{0,32*0,4*0,5*1000}=\sqrt{64}=8[/tex]
d) [tex]0,2\sqrt{50}+0,8\sqrt{72}-0,3\sqrt{32}=0,2\sqrt{25*2}+0,8\sqrt{36*2}-0,3\sqrt{16*2}=0,2*5\sqrt{2}+0,8*6\sqrt{2}-0,3*4\sqrt{2}=\sqrt{2}+4,8\sqrt{2}-1,2\sqrt{2}=4,6\sqrt{2}[/tex]
e) [tex]\frac{1}{3}\sqrt{72}-0,5\sqrt{200}+\frac{2}{3}\sqrt{18}-0,8\sqrt{32}=\frac{1}{3}\sqrt{36*2}-0,5\sqrt{100*2}+\frac{2}{3}\sqrt{9*2}-0,8\sqrt{16*2}=\frac{1}{3}*6\sqrt{2}-0,5*10\sqrt{2}+\frac{2}{3}*3\sqrt{2}-0,8*4\sqrt{2}=2\sqrt{2}-5\sqrt{2}+2\sqrt{2}-3,2\sqrt{2}=-4,2\sqrt{2}[/tex]
