(4/(√2-√6)-4/(√2+√6) ) (√54-√24 )---------------------(4/(√2-√6) - 4/(√2+√6)(√54-√24 ) = 4(√2+√6)/(√2-√6)(√2+√6) -4/√2(1+√3)(3√6-2√6 ) =4(√2+√6)/(2-6) - 2√2/(1+√3)√2 √3 = -(√6+√2) -2/(3+√3) = -(√6+√2) -2(3-√3) /(3+√3)(3-√3) = -(√6+√2) -2(3-√3) /(9 -3) = -(√6+√2) -(3-√3) /3 = -√6-√2 - 1 +(√3)/3 .что -то ненормально .