七年级数学整式的加减法计算题大全 349Word文档下载推荐.docx
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-—(2k3-3k2-9)-—(6k3-6k2+3k)
63
(k2-4k)+(8k2-5k-8)
(a2+4a-2b)-(4a2-9a+9b)
8x2-(5x2+8x+5)+(9x-4)
8y2-(7x2-y)+(x2-6y2)
7
(x2+6xy+—x)-(8x2-5xy+7x)
8
51
(—xy-5y2+5)+(x2+—xy+y2+5)
68
51
(xy+—y-—)+(xy+x-3)
66
(7y+4x-2z2)-(2y+5x-9z2)
(4m2-2m-5)+(6m+4n+4)
(x2+6x-9)+4(6x2+3x)
-9(x2-5)+9(x2+4)
-(x2y+4xy+5)+6(x2y+8xy+2)
61
(—x2-17x+14y)-(—x2+15x+14y)
77
-—(k3-7k2-1)-—(k3-2k2-7k)
42
(7k2-7k)-(6k2-6k+2)
(5a2+4a+4b)+(8a2-8a+3b)
6x2-(x2+7x-1)+(4x-2)
5y2-(2x2-y)-(7x2-6y2)
6
(5x2-6xy-—x)-(x2+6xy+4x)
41
(—xy+5y2-7)-(x2-—xy+3y2+1)
33
21
(xy-—y-—)+(xy-x-2)
34
(3y-2x+2z2)-(7y+x-4z2)
(5m2-8m-8)-(9m+8n+7)
(2x2-7x+5)+8(3x2+7x)
-2(x2-4)-3(x2-2)
-(x2y-8xy-3)+8(x2y-8xy+2)
71
(—x2-11x-16y)+(—x2+12x+20y)
88
-—(9k3-k2+8)+—(4k3-6k2+6k)
65
(7k2-7k)+(k2-2k-2)
(5a2-3a-9b)+(9a2-4a+9b)
8x2+(8x2+7x-4)-(7x+2)
3y2+(6x2+y)+(2x2+8y2)
9
(8x2-8xy+—x)+(7x2+6xy+4x)
15
(—xy-3y2-2)-(x2-—xy+8y2-1)
56
11
(xy+—y-—)-(xy+x-1)
58
(5y-x-8z2)-(3y+3x-6z2)
(8m2+m-1)+(m+5n+8)
(x2+7x-6)+8(2x2+8x)
-8(x2-4)-7(x2+2)
-(x2y+5xy+4)+7(x2y+4xy-5)
(—x2+21x-11y)+(—x2+18x+21y)
-—(9k3+2k2+3)+—(9k3-6k2-4k)