已知a 2 +2a=8,则 1 a+1 - 1 a 2 -1 ÷ a+1 a 2 -2a+1 的值为______.
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案:
举一反三
【简答题】Why do people play football? It's an exciting 1 and it's erous too. Twenty-two men fight 2 ninety minutes to make as many goals as they can. They get 3 black eyes, bruise(擦伤) and broken bones tha...
【简答题】As a university student, you are no longer forced to stay in school all day. Apart from your class time, you organize your own time and place for studying. You are there to study (an active process) r...
【简答题】As a university student, you are no longer forced to stay in school all day. Apart from your class time, you organize your own time and place for studying. You are there to study (an active process) r...