先化簡再求值:(x+1一)×,其中x=-
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問題詳情:
先化簡再求值:(x+1一)×,其中x=-
【回答】
解:
=··································································· 1分
=························································································ 2分
=························································································ 3分
=···································································································· 4分
當=時·················································· 5分
原式==······················································································· 6分
知識點:分式的運算
題型:解答題