(1+2x-4/x2-x-2)÷x+3/x²-1 化简 x=根号3 先化简再求值(1+2x-4/x²-x-2)÷x+3/x²-1

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(1+2x-4/x2-x-2)÷x+3/x²-1化简x=根号3先化简再求值(1+2x-4/x²-x-2)÷x+3/x²-1(1+2x-4/x2-x-2)÷x+3/x

(1+2x-4/x2-x-2)÷x+3/x²-1 化简 x=根号3 先化简再求值(1+2x-4/x²-x-2)÷x+3/x²-1
(1+2x-4/x2-x-2)÷x+3/x²-1 化简 x=根号3 先化简再求值
(1+2x-4/x²-x-2)÷x+3/x²-1

(1+2x-4/x2-x-2)÷x+3/x²-1 化简 x=根号3 先化简再求值(1+2x-4/x²-x-2)÷x+3/x²-1
=(x²-x-2+2x-4)/(x²-x-2)×(x²-1)/(x+3)
=(x²+x-6)/(x-2)(x+1)×(x+1)(x-1)/(x+3)
=(x+3)(x-2)/(x-2)(x+1)×(x+1)(x-1)/(x+3)
=x-1
当x= √3时
原式=x-1=√3-1