先化简(1+)÷,再从不等式组的整数解中选一个合适的x的值代入求

先化简(1+)÷,再从不等式组的整数解中选一个合适的x的值代入求值.

答案

解:原式=×

解不等式组得﹣2x4

∴其整数解为﹣10123

∵要使原分式有意义,

x可取02

∴当x0 时,原式=﹣3

(或当x2 时,原式=﹣).

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