约分：x²+x- 2/x²- x- 6

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约分：x²+x- 2/x²- x- 6
约分：x²+x- 2/x²- x- 6

约分：x²+x- 2/x²- x- 6
x²+x- 2/x²- x- 6
=(x+2)(x-1)/[(x-3)(x+2)]
=(x-1)/(x-3)

x²+x- 2/x²- x- 6
=（x-1)(x+2)/[(x-3)(x+2)]
=（x-1)/(x-3)

(x²+x-2)/(x²-x-6)
=(x+2)(x-1)/[(x-3)(x+2)]
=(x-1)/(x-3)