求三次根号27+(根号3-1)²-(1/2)^(-1)+4/根号3+1=
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![求三次根号27+(根号3-1)²-(1/2)^(-1)+4/根号3+1=](/uploads/image/z/1673128-64-8.jpg?t=%E6%B1%82%E4%B8%89%E6%AC%A1%E6%A0%B9%E5%8F%B727%2B%EF%BC%88%E6%A0%B9%E5%8F%B73-1%EF%BC%89%26%23178%3B-%EF%BC%881%2F2%EF%BC%89%5E%EF%BC%88-1%EF%BC%89%2B4%2F%E6%A0%B9%E5%8F%B73%2B1%3D)
求三次根号27+(根号3-1)²-(1/2)^(-1)+4/根号3+1=
求三次根号27+(根号3-1)²-(1/2)^(-1)+4/根号3+1=
求三次根号27+(根号3-1)²-(1/2)^(-1)+4/根号3+1=
原式=3+(3-2√3+1)-2+4(√3-1)/(3-1)
=3+4-2√3-2+2√3-2
=3.
v27 +(v3 -1)^2 -(1/2)^(-1) +4/(v3 +1)
=3+(3-2v3 +1) -2 +4(v3 -1)/(v3 +1)(v3-1)
=3+(4-2v3)-2 +(4v3 -4)/2
= 5-2v3 +2v3-2
=3