(2分之根号3减1)平方减根号3减1分之根号3加1

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(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)/2