问题
解答题
解分式方程：
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答案
方程两边同时乘以x-3，得
4-x-1=x-3，
解得 x=3，
经检验，x=3是原方程的增根，
原方程无解．
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解分式方程：
|
方程两边同时乘以x-3，得
4-x-1=x-3，
解得 x=3，
经检验，x=3是原方程的增根，
原方程无解．
| 从下面方框中选择适当的单词或短语，并用其正确形式填空。 | |
2.The Smiths have an nine-year-old girl who _____ dance. She has won two national prizes up to now. 3. Its purpose was to help the whole society _____ helpinventors. 4. The family went to Britain and _____ there. 5. The task is so easy to do that I can finish it _____ tenminutes. 6. He worked hard so that he _____ pass the exam. 7. The house was _____ by high walls and trees. 8. It is good for you to _____ your friends sometimes. |