七年级数学下册整式的加减法练习题精选强烈推荐 182Word文件下载.docx
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(5x2-8xy-—x)+(x2-xy+4x)
5
15
(—xy-5y2-9)-(x2+—xy+6y2+3)
74
18
(xy-—y+—)+(xy-x-8)
37
(7y+7x+z2)+(4y-3x+7z2)
(m2+3m-6)-(8m+8n-2)
(4x2+x+4)+5(7x2+2x)
-5(x2-2)+7(x2+2)
-(x2y+2xy+9)-9(x2y+6xy-9)
71
(—x2+19x+17y)-(—x2-19x-21y)
66
11
-—(2k3+7k2+4)+—(9k3-7k2-6k)
62
(5k2-6k)+(6k2+2k-9)
(2a2+5a+3b)-(8a2-3a-4b)
7x2+(2x2-4x-8)-(5x-6)
7y2-(3x2+y)-(4x2-6y2)
7
(9x2+6xy-—x)+(9x2+7xy+5x)
8
(—xy+y2+7)-(x2-—xy+7y2+3)
58
99
(xy+—y+—)+(xy+x-9)
88
(2y-8x+5z2)-(2y-9x+9z2)
(5m2-3m+6)+(6m+4n-1)
(9x2-3x-4)-7(5x2+8x)
-6(x2+8)-8(x2-5)
-(x2y+3xy+5)-3(x2y-8xy-9)
57
(—x2-10x-14y)-(—x2-11x+13y)
-—(k3+7k2+9)+—(2k3-9k2+1k)
43
(5k2-8k)-(3k2-8k-3)
(6a2+3a-6b)-(3a2-9a+6b)
8x2-(7x2-6x-9)-(6x+7)
y2-(x2-y)+(6x2-5y2)
4
(9x2-5xy+—x)-(7x2+2xy+4x)
3
51
(—xy-4y2-6)+(x2-—xy-8y2+5)
48
45
(xy+—y-—)-(xy-x+6)
56
(2y+x+8z2)+(5y-5x+z2)
(2m2-2m-5)-(2m+n+6)
(9x2-7x+1)-7(8x2-5x)
-4(x2-3)+5(x2-1)
-(x2y-7xy-2)+6(x2y+8xy+4)
(—x2+15x+16y)+(—x2+12x-28y)
33
-—(4k3-6k2-6)+—(3k3-7k2+6k)
44
(7k2+8k)-(8k2-4k-9)
(6a2-2a-4b)-(5a2+a-7b)
4x2-(8x2-5x-9)+(4x+3)