Question

10道合并同类项试题

快呀,10道合并同类项,初一上的,不要太难

Answer 1

3m2n+6mn2-mn2-m2n
-3x2y+5xy2-6xy2+4-7x2y-9
xy2+(-3x2y)+4xy2+(-5x2y)，
(3x-5y)-(6x+7y)+(9x-2y)
2a-[3b-5a-(3a-5b)] (6m2n-5mn2)-6(m2n-mn2)

m2+(-mn)-n2+(-m2)-(-0.5n2)

2(4an+2-an)-3an+(an+1-2an+1)-(8an+2+3an)

(x-y)2-(x-y)2-[(x-y)2-(x-y)2]
a-(a-3b+4c)+3(-c+2b)

(3x2-2xy+7)-(-4x2+5xy+6)

2x2-{-3x+6+[4x2-(2x2-3x+2)]}
a>0，b<0，|6-5b|-|3a-2b|-|6b-1|

1<a<3，|1-a|+|3-a|+|a-5|

要答案的话
http://zhidao.baidu.com/question/38090333.html?si=1

Answer 2

1--7(x-3)-5(2x=1)
2--m2+(-mn)-n2+(-m2)-(-0.5n2)
3--1<a<3，|1-a|+|3-a|+|a-5|
4--a>0，b<0，|6-5b|-|3a-2b|-|6b-1|
5--3m2n+6mn2-mn2-m2n
6--2x2-{-3x+6+[4x2-(2x2-3x+2)]}
7--a-(a-3b+4c)+3(-c+2b)
8--a-(a-3b+4c)+3(-c+2b)
9--m2+(-mn)-n2+(-m2)-(-0.5n2)
10--(3x-5y)-(6x+7y)+(9x-2y)

Answer 3

1. (3x-5y)-(6x+7y)+(9x-2y) 
   

2. 2a-[3b-5a-(3a-5b)] 
   

3. 2(4an+2-an)-3an+(an+1-2an+1)-(8an+2+3an) 
   

4. a-(a-3b+4c)+3(-c+2b) 
   

5. (3x2-2xy+7)-(-4x2+5xy+6) 
   

6. 3ab-4ab+8ab-7ab+ab

7. 7x-(5x-5y)-y

8. -7x2+6x+13x2-4x-5x2

9. 2y+(-2y+5)-(3y+2) 

10. 2a-(3a-2b+2)+(3a-4b-1)

11. 2x-(x+3y)-(-x-y)-(x-y)

12. 2x+2y-[3x-2(x-y)]

13. 5-(1-x)-1-(x-1)
    
    

Answer 4

5a-4y+4b-5a
3a+5y-3b+5a-4y
a-2a-7+5b-3a+5y

Answer 5

随便找本练习册上就有……
实在不行就去百度网上找