(корень12 - 4корень3 +корень8)×корень2=
(√12-4√3+√8)*√2=√24-4√6+√16=2√6-4√6+4=4-2√6
( √12 - 4√3 + √8 ) * √2 = = ( √(4*3) - 4√3 + √4*2 ) * √2 = = ( 2√3 - 4√3 + 2√2 ) * √2 = = ( √3(2 - 4) + 2√2 ) * √2 = = ( -2√3 + 2√2 ) * √2 = = ( 2√2 - 2√3) * √2 = = √2 * 2√2 - √2 * 2√3 = = 2 * 2 - 2√(2 * 3) = = 4 - 2√6