(√3+√2-1)×(√3-√2+1)=-(-√3-√2+1)×(√3-√2+1)=-[(-√2+1)²-(√3)²]=-[1-2√2+2-3]=-2√2如有错误,请谅解!
(√3+√2-1)×(√3-√2+1)=[√3+(√2-1)]x[√3-(√ 2-1)]=(√3)² -(√ 2- 1)²=3-2+2√2-1=2√2