lim x趋于-2 [(1/x+2)+(4/x^2-4)
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limx趋于-2[(1/x+2)+(4/x^2-4)limx趋于-2[(1/x+2)+(4/x^2-4)limx趋于-2[(1/x+2)+(4/x^2-4)lim[x→-2](1/x+2)+(4/x&
lim x趋于-2 [(1/x+2)+(4/x^2-4)
lim x趋于-2 [(1/x+2)+(4/x^2-4)
lim x趋于-2 [(1/x+2)+(4/x^2-4)
lim[x→-2] (1/x+2)+(4/x²-4)
=1/-2+2+4/(-2)²-4
=-1/2+2+1-4
=-1-1/2
=-3/2
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