lim(x趋于-2)x^2-x-6/x^2+3x+2
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lim(x趋于-2)x^2-x-6/x^2+3x+2lim(x趋于-2)x^2-x-6/x^2+3x+2lim(x趋于-2)x^2-x-6/x^2+3x+2原式=lim(x趋于-2)(x-3)(x+2
lim(x趋于-2)x^2-x-6/x^2+3x+2
lim(x趋于-2)x^2-x-6/x^2+3x+2
lim(x趋于-2)x^2-x-6/x^2+3x+2
原式=lim(x趋于-2)(x-3)(x+2)/(x+1)(x+2)
=lim(x趋于-2)(x-3)/(x+1)
=(-2-3)/(-2+1)
=5
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