当x=根号2+1时,求(x-3/x^2-1)/(x-3/(x+1)^2)-(1/x-1)

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当x=根号2+1时,求(x-3/x^2-1)/(x-3/(x+1)^2)-(1/x-1)当x=根号2+1时,求(x-3/x^2-1)/(x-3/(x+1)^2)-(1/x-1)当x=根号2+1时,求(

当x=根号2+1时,求(x-3/x^2-1)/(x-3/(x+1)^2)-(1/x-1)
当x=根号2+1时,求(x-3/x^2-1)/(x-3/(x+1)^2)-(1/x-1)

当x=根号2+1时,求(x-3/x^2-1)/(x-3/(x+1)^2)-(1/x-1)
原式=(x-3)/(x+1)(x-1)*(x+1)²/(x-3)-1/(x-1)
=(x+1)/(x-1)-1/(x-1)
=x/(x-1)
=(√2+1)/(√2-1-1)
=(√2+1)/√2
=(2+√2)/2