Упростить выражение: 1/3√18+2√2 2)2√20-2√45+1/4√16

1) =1/3*[latex] \sqrt{9*2} [/latex]+2[latex] \sqrt{2} [/latex]=1/3*3[latex] \sqrt{2} [/latex]+2[latex] \sqrt{2} [/latex]=[latex] \sqrt{2} [/latex]+2[latex] \sqrt{2} [/latex]=3[latex] \sqrt{2} [/latex] 2)=2*[latex] \sqrt{5*4} [/latex]-2[latex] \sqrt{5*9} [/latex]+1/4*4=2*2*[latex] \sqrt{5} [/latex] - 2*3[latex] \sqrt{5} [/latex]+1=4[latex] \sqrt{5} [/latex] -6[latex] \sqrt{5} [/latex] +1=1-2[latex] \sqrt{5} [/latex]