1)8;13; 6/5
2)√4,41=2,1; -2,5√25=-12,5; √19,36=4,4
3)-(√6)=-6; 0,5√400=10; √92,16=9,6
4)2√6*√6=12; √0,09-0,03=0
5)√5^2+24=√49=7; √17,64=4,2;
6)√625-√256=25-16=9; -1/7(√14)^2=-1/7*14=-2; √0,5^2-0.1^2=0.4;
7)√0.04=0.2; 0,2√676+√2304=0,2*26+48=53,2; 1,8√1/9=3/5; (√9)^2-7.5=9-7.5=1.5
8)(√3/√6)^2=3/6=1/3;