问题
解答题
已知y=
|
答案
根据题意得,
÷x x2-x
-x2-1 x2-2x+1
=2 x+1
,1 3
×x x(x-1)
-(x-1)2 (x-1)(x+1)
=2 x+1
,1 3
-
=1 x+1
,1 3
解得x=-4,
经检验x=-4是原方程的根;
∴原方程的解为:x=-4.
已知y=
|
根据题意得,
÷x x2-x
-x2-1 x2-2x+1
=2 x+1
,1 3
×x x(x-1)
-(x-1)2 (x-1)(x+1)
=2 x+1
,1 3
-
=1 x+1
,1 3
解得x=-4,
经检验x=-4是原方程的根;
∴原方程的解为:x=-4.
Alice was a beautiful girl. She liked nothing except dressing __1__ and dancing when she was at school. Of course she wasn’t good at her __2__. But the boys were ready to help her with her lessons __3__ they liked to dance with her. And after she finished middle school, she __4__ found work in a big shop. The __5__ had a son and he wanted the girl to marry him. Alice __6__ though the young man wasn’t clever enough. And she __7__ all kinds of clothes and shoes. She lived in the beautiful house with a big garden and she __8__ did anything at home. She didn’t love her __9__ but she lived a city life. Once Mrs. Evans called Alice. The woman said she bought a few __10__ pictures and asked her to appreciate(欣赏)them. She __11__ nothing about the art but she was afraid to be laughed at and got there in time. She saw several women there. They were __12__the pictures when she went in. She thought for a long time and said, “Look! They’re all __13__. Why didn’t you buy the new ones?” The women looked at each other but they tried not to __14__. And when they were appreciating a picture “Tramp(游浪汉)”, she said, “I don’t think the artist could draw! Such a__15__ man had no money to have a portrait taken(请人画像)!”
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