Question

【化简求值】(x分之x+2 - x-2分之x-1)÷x分之x-4

Answer 1

[（x+2)/x-(x-1)/(x-2)]÷（x-4)/x

=[1+2/x-1-1/(x-2)]×x/(x-4)

=(x-4)/x(x-2)×x/(x-4)

=1/(x-2)

=1/(3-2)

=1

这是我在静心思考后得出的结论,

如果不能请追问,我会尽全力帮您解决的~

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