另求英语短文一个,在3a^2-2ab-b^2-( )=-5a^2+ab-2b^2的括号里,应填入的代数式是什么?另求一篇7,8句话的英语小短文,生词越少越好,

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另求英语短文一个,在3a^2-2ab-b^2-()=-5a^2+ab-2b^2的括号里,应填入的代数式是什么?另求一篇7,8句话的英语小短文,生词越少越好,另求英语短文一个,在3a^2-2ab-b^2

另求英语短文一个,在3a^2-2ab-b^2-( )=-5a^2+ab-2b^2的括号里,应填入的代数式是什么?另求一篇7,8句话的英语小短文,生词越少越好,
另求英语短文一个,
在3a^2-2ab-b^2-( )=-5a^2+ab-2b^2的括号里,应填入的代数式是什么?
另求一篇7,8句话的英语小短文,生词越少越好,

另求英语短文一个,在3a^2-2ab-b^2-( )=-5a^2+ab-2b^2的括号里,应填入的代数式是什么?另求一篇7,8句话的英语小短文,生词越少越好,
1. 8a^2 - 3ab + b^2
2. My name is Jason,I'm a boy, I have a sister ,
she is very beautiful. My father is Doctor ,
and my mother is a nurses,I love my family.
I have a good fiend named Jacky ,
he likes play football,he is very outgoing,
and also He's a very good achievement.
Yesterday,we had a football match,
Of course,we won.
Jacky scored three goals,
Yesterday I think he is too much.