看得清么?
解:1÷(√3+√2)+1÷(√2+1)-1÷(√3-1)=(√3-√2)/(√3+√2)(√3-√2)+(√2-1)/(√2+1)(√2+1)-(√3+1)/(√3+1)(√3-1)=(√3-√2)/(3-2)+(√2-1)/(2-1)-(√3+1)/(3-1)=(√3-√2)+(√2-1)-(√3+1)/2=√3-√2+√2-1-(√3+1)/2=√3-1-(√3+1)/2=(2√3-2-√3-1)/2=(√3-3)/2