(√27-2)(2-3√3) = (√(3*9)-2)(2-3√3) = (3*√3-2)(2-3√3) = - ( 2-3√3)(2-3√3) = - (2-3√3)^2 = - (4 -2*2*3√3 +27) =
-31+12√3
(√27-2)(2-3√3) = (√(3*9)-2)(2-3√3) = (3*√3-2)(2-3√3) = - ( 2-3√3)(2-3√3) = - (2-3√3)^2 = - (4 -2*2*3√3 +27) =
-31+12√3