Решите пожалуйста (√6+√3)*√12-2√6*√3
=√6*√6*√2+√3*√3*√4-(2√3*√2*√3)=6√2+3*2-2*3√2=6√2+6-6√2=6
2-(6 7/8-7 1/3):3/4 = 2 11/12 6 7/8-7 1/3 = 6 21/24 - 7 8/24 = 165/24 - 176/24 = - 11/24 - 11/24:3/4 = -11/24*4/3 = - 11/12 2 - (-11/`12) = 2 + 11/12= 2 11/12