[1/(2+√3)+2/(√3-1)]×[(4/(3√2+4)-3/(3-2√2)]=
=[(2-√3)/(2+√3)(2-√3)+2(√3+1)/(√3-1)(√3+1)]×[(4(3√2-4)/(3√2+4)(3√2-4) - -3(3+2√2)/(3-2√2)(3+2√2)]=
=[(2-√3)/(4-3)+2(√3+1)/(3-1)]×[(4(3√2-4)/(18-16)-3(3+2√2)/(9-8)]=
=(2-√3+√3+1)×[(2(3√2-4)-3(3+2√2)]=
=3×(6√2-8-9-6√2)=
=3×(-17)=-51