(3 √6 + √12 ) * √3 = (3 √(2*3) + √(4*3) ) *√3 = (3 √2√3 + √4√3) ) *√3 =
= 3 √2√3√3 + 2√3√3 = 3 √2*3 + 2*3 = 9 √2 + 6
(3 √6 + √12 ) * √3 = (3 √(2*3) + √(4*3) ) *√3 = (3 √2√3 + √4√3) ) *√3 =
= 3 √2√3√3 + 2√3√3 = 3 √2*3 + 2*3 = 9 √2 + 6