1)√36*0,25+2√3*√27=6*0,25+2√3*27=1,5+2*9=1,5+18=19,5
2)2x^2+1=33
2x^2=32
x^2=32/2
x^2=16
x=√16
x=4
3) √81+2√27*√3=√81+2√81=3√81
4)2*√36+2*√169=2*6+2*13=12+26=38
