七年级数学下册整式的加减法练习题精选强烈推荐 62.docx
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七年级数学下册整式的加减法练习题精选强烈推荐62
4
(7x2+3xy+—x)-(2x2-9xy+x)
5
11
(—xy+9y2+8)-(x2+—xy-8y2-9)
36
58
(xy-—y-—)-(xy+x+3)
67
(8y+4x-5z2)+(6y-2x-6z2)
(4m2+7m-7)-(m-4n-8)
(9x2-2x+1)-7(8x2+6x)
-4(x2-8)-9(x2+9)
-(x2y+7xy-5)-9(x2y-5xy-3)
88
(—x2-20x-15y)-(—x2-20x-28y)
77
11
-—(8k3-2k2+5)-—(4k3-5k2-8k)
45
(5k2+6k)-(k2-7k+4)
(2a2+9a+7b)+(7a2-2a-2b)
8x2+(6x2+5x+2)-(6x+5)
6y2+(7x2+y)+(9x2-3y2)
6
(2x2+4xy+—x)+(3x2+9xy-5x)
7
56
(—xy-7y2+3)-(x2+—xy-3y2-4)
47
17
(xy+—y+—)-(xy-x-8)
46
(5y-x+7z2)+(5y+4x-6z2)
(2m2+8m+4)-(4m-3n-2)
(3x2+7x-8)-2(8x2+2x)
-7(x2+7)-9(x2+4)
-(x2y-8xy+9)-5(x2y-7xy+6)
14
(—x2-14x-16y)+(—x2-14x+14y)
33
11
-—(6k3+8k2-5)-—(k3-5k2-1k)
62
(2k2-3k)+(6k2+9k+1)
(9a2-4a+3b)+(6a2-6a+8b)
4x2+(3x2+9x-9)-(4x-2)
2y2-(3x2-y)-(4x2-7y2)
5
(6x2-7xy+—x)+(7x2+7xy-5x)
4
71
(—xy-6y2-1)-(x2+—xy-y2+9)
68
51
(xy-—y+—)+(xy+x-7)
47
(6y+8x-5z2)+(3y-8x+5z2)
(7m2+9m-7)-(5m-5n+4)
(8x2+x-1)-5(7x2+x)
-6(x2+8)-2(x2+1)
-(x2y-9xy-4)+8(x2y-8xy-8)
44
(—x2-29x+14y)-(—x2+19x+17y)
55
11
-—(9k3-8k2+8)+—(5k3-7k2-6k)
22
(6k2+6k)-(k2+3k+4)
(6a2-9a-3b)+(8a2-9a+5b)
4x2-(2x2+4x-7)-(7x+2)
5y2+(2x2+y)+(9x2-2y2)
1
(3x2+8xy+—x)-(3x2+5xy+2x)
6
16
(—xy-3y2+1)+(x2-—xy+6y2+2)
55
48
(xy+—y+—)-(xy+x+1)
37