把方程3x（x-1）=2（x+2）+8化成一般形式为______，它的一次项系数为______，常数项为______．

根据首字母和英文解释写出单词或词组

1.  s____________   ( a carved or painted board; a mark having an accepted meaning)

2.  d___________   ( illness)

3.   s___________   ( to find a solution)

4.   c___________   ( make clean)

5.   c___________   ( to express feelings of pain. or dissatisfaction)

6．e__________  ( set up)

7.   t___________ up  (come up with)  

8．c___________   (teach or train sb. esp. for a sports contest)

9．S___________   (looking like sb./sth. , but not the same)