(2分之根号3减1)平方减根号3减1分之根号3加1=(√3-1/2)^2 -(√3+1)/(√3-1)=(√3-1/2)^2 -(√3+1)^2/(√3-1)(√3+1)=(√3-1)^2/4 -(√3+1)^2/2=[3-2√3+1 -2(3+2√3+1)]/4=[4-2√3 -8-4√3]/4=[-4-6√3]/4=(-2-3√3)...