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.