解：方程兩邊同乘以![]()
-2，得1-![]()
+2（![]()
-2）=1， ············································ 2分
即1-![]()
+2![]()
-4=1，···················································································· 4分
解得![]()
=4．···························································································· 5分
經檢驗， ![]()
=4是原方程的根．···································································· 6分
解析:略
閱讀快車系列答案
．
.
．
