初一合并同类项的计算题,

问题描述:

初一合并同类项的计算题,

题目在哪?

1)(3x-5y)-(6x+7y)+(9x-2y)
(2)2a-[3b-5a-(3a-5b)]
(3)(6m2n-5mn2)-6(m2n-mn2)
1)m2+(-mn)-n2+(-m2)-(-0.5n2)
(2)2(4an+2-an)-3an+(an+1-2an+1)-(8an+2+3an)
(3)化简:(x-y)2-(x-y)2-[(x-y)2-(x-y)2]
(1)a-(a-3b+4c)+3(-c+2b)
(2)(3x2-2xy+7)-(-4x2+5xy+6)
(3)2x2-{-3x+6+[4x2-(2x2-3x+2)]}
1--7(x-3)-5(2x=1)
2--m2+(-mn)-n2+(-m2)-(-0.5n2)
3--14--a>0,b5--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)
5a-4y+4b-5a
3a+5y-3b+5a-4y
a-2a-7+5b-3a+5y

(x+5y)-(3y-4x)=x+5y-3y+4x
10a+6b-7a+3b-10a+10b+12a+8b
4xy-2y+3x-xy
(3x-5y)-(6x+7y)+(9x-2y)
2a-[3b-5a-(3a-5b)]