七年级数学下册整式的加减法练习题精选强烈推荐 520Word格式.docx
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(2x2-6x+3)+8(3x2+5x)
-7(x2-7)+9(x2-9)
-(x2y+2xy+4)-9(x2y-3xy+7)
61
(—x2-10x+11y)+(—x2+20x+24y)
77
11
-—(6k3+2k2-2)-—(9k3+7k2-6k)
43
(2k2-6k)+(5k2-5k-8)
(6a2+7a+3b)-(6a2+4a+8b)
4x2+(3x2+8x-5)+(x+2)
8y2+(9x2+y)+(8x2-5y2)
5
(6x2-9xy+—x)+(7x2+7xy-6x)
4
64
(—xy+4y2-7)-(x2+—xy+6y2+1)
53
31
(xy-—y+—)+(xy+x-6)
45
(2y+6x-6z2)+(6y-8x-4z2)
(9m2+9m-2)-(4m+7n-4)
(8x2-3x+6)+7(7x2+7x)
-4(x2+4)+4(x2-1)
-(x2y+4xy+2)-9(x2y-5xy-4)
24
(—x2-12x+19y)-(—x2+19x+13y)
33
-—(9k3-5k2+3)-—(4k3+9k2+1k)
65
(8k2-8k)+(7k2-7k+1)
(a2-4a-7b)-(4a2+4a-6b)
4x2-(6x2+4x+7)+(4x+8)
6y2+(x2-y)+(7x2-2y2)
1
(2x2-8xy-—x)+(3x2-2xy+4x)
3
41
(—xy-y2-9)-(x2+—xy-8y2+8)
56
51
(xy-—y-—)+(xy+x+7)
(y-3x+9z2)-(3y+7x-5z2)
(3m2+8m+1)-(3m+n-6)
(9x2+9x+2)-2(2x2-3x)
-7(x2-8)+4(x2+5)
-(x2y+9xy+5)-3(x2y-2xy+7)
55
(—x2+18x-16y)+(—x2-17x+10y)
66
-—(3k3-9k2+6)-—(4k3-4k2-9k)
23
(7k2+9k)-(9k2-5k+4)
(a2-5a-4b)-(3a2+a-2b)
5x2-(x2+x+3)-(x-1)
6y2-(x2+y)+(4x2-6y2)
(9x2-xy+—x)+(7x2-7xy+8x)
6
(—xy+6y2-7)+(x2+—xy+3y2-6)
86
21
(xy+—y-—)-(xy-x-2)
34
(6y-5x+2z2)-(4y+5x-6z2)
(4m2-2m-8)-(3m+3n-3)