七年级数学下册整式的加减法练习题精选强烈推荐 486Word下载.docx
《七年级数学下册整式的加减法练习题精选强烈推荐 486Word下载.docx》由会员分享,可在线阅读,更多相关《七年级数学下册整式的加减法练习题精选强烈推荐 486Word下载.docx(7页珍藏版)》请在冰豆网上搜索。
6
16
(—xy-7y2+4)-(x2-—xy-7y2-5)
35
11
(xy-—y+—)-(xy-x+9)
37
(4y+8x-5z2)+(3y+3x-4z2)
(7m2-m+2)-(2m+8n+4)
(2x2-7x-3)-8(6x2-2x)
-8(x2-1)-3(x2-7)
-(x2y-6xy+5)+7(x2y-2xy+9)
11
(—x2+15x-20y)+(—x2+15x-17y)
44
-—(2k3-7k2-2)+—(6k3+4k2-3k)
24
(5k2+8k)+(8k2+5k+8)
(7a2-4a-5b)+(6a2-2a+4b)
2x2+(x2+5x+8)-(4x-5)
5y2-(3x2+y)-(2x2+9y2)
1
(5x2+4xy-—x)+(x2-9xy+9x)
71
(—xy+5y2-8)-(x2-—xy+6y2-3)
65
81
(xy+—y-—)+(xy-x+9)
78
(2y-5x-7z2)+(3y-7x-7z2)
(9m2-8m+7)+(5m+3n-1)
(5x2-5x-3)-3(8x2+5x)
-8(x2+3)-8(x2+3)
-(x2y-3xy-8)-3(x2y-2xy+3)
21
(—x2-14x+11y)-(—x2+12x+25y)
33
-—(4k3+5k2+4)+—(4k3-8k2+3k)
(4k2-4k)-(3k2+3k+3)
(4a2+3a+2b)+(3a2+8a-b)
8x2-(5x2-3x+2)+(9x-4)
6y2-(6x2+y)-(9x2+4y2)
(8x2-4xy-—x)+(x2-7xy-x)
31
(—xy-7y2-3)-(x2+—xy+4y2+1)
45
35
(xy-—y+—)+(xy-x+8)
46
(9y-4x+9z2)+(6y+8x-4z2)
(6m2-4m-9)-(7m+n+7)
(x2-5x-6)+9(x2-8x)
-4(x2+8)-6(x2+3)
-(x2y+3xy-2)+2(x2y-3xy+7)
(—x2+12x+18y)+(—x2-16x+19y)
55
-—(2k3-5k2+6)+—(5k3-8k2-6k)
(3k2+7k)-(8k2-9k+3)
(4a2-4a-5b)+(4a2-a-4b)
9x2+(5x2+9x+6)-(9x-8)
y2-(5x2-y)+(4x2-2y2)
(8x2+xy+—x)+(3x2-8xy+4x)