七年级数学下册计算题大全256Word格式文档下载.docx
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4y2-(3x2-y)+(3x2-2y2)
(3x2-6xy+—x)-(5x2+9xy-9x)
6
51
(—xy-7y2-3)+(x2+—xy-5y2+5)
46
21
(xy+—y+—)-(xy-x-1)
38
(9y-9x+2z2)-(3y+x+3z2)
(8k2-9k)-(4k2+8k-1)
(8a2-8a+4b)-(5a2+4a-9b)
7x2-(5x2-4x+7)-(6x+9)
5y2+(2x2-y)-(6x2+2y2)
(x2+xy-—x)+(x2-7xy+2x)
8
11
(—xy+4y2+5)+(x2-—xy+5y2+1)
64
61
(xy+—y+—)-(xy+x+5)
78
(6y+9x+8z2)+(7y+6x+6z2)
(8k2+3k)+(5k2+9k-7)
(4a2+7a-8b)+(6a2+4a+9b)
x2-(7x2-5x-5)-(3x+7)
2y2+(6x2+y)+(7x2+3y2)
2
(5x2-8xy-—x)-(x2-4xy+6x)
97
(—xy-7y2-2)-(x2+—xy-2y2+5)
86
14
(xy-—y-—)+(xy-x-2)
53
(7y-9x-5z2)+(9y+6x-z2)
(3k2-3k)-(6k2-5k-3)
(9a2-8a+9b)-(6a2-6a+3b)
9x2+(8x2-8x+4)-(5x+8)
3y2-(x2-y)-(9x2-5y2)
(5x2-2xy+—x)+(2x2-6xy-7x)
5
(—xy+7y2+7)-(x2-—xy+4y2+6)
47
(xy+—y-—)+(xy+x+1)
65
(2y-7x-7z2)-(5y-x-7z2)
(3k2+9k)-(6k2-k-2)
(2a2-6a+b)+(7a2+5a-6b)
9x2+(9x2+6x+9)+(7x-3)
4y2+(7x2-y)+(4x2+4y2)
(8x2+3xy+—x)-(x2-8xy+7x)
75
(—xy-7y2+3)-(x2-—xy-4y2+4)
(xy-—y+—)+(xy-x+6)
76
(8y+3x+5z2)+(3y-2x+5z2)
(9k2+7k)-(8k2-4k+5)
(7a2+a+4b)+(7a2+6a-9b)
4x2-(x2+4x+5)+(x+2)
3y2+(2x2-y)-(7x2-7y2)
(6x2+xy-—x)-(8x2+7xy-6x)
4
61
(—xy-4y2-1)-(x2+—xy+y2+5)
54
56
45
(8y-6x-5z2)-(3y-7x+3z2)
(7k2+4k)+(7k2+3k-8)
(7a2+6a-5b)+(8a2+5a-b)
x2-(3x2-5x-1)+(8x-3)
5y2-(4x2+y)+(8x2-y2)
(8x2+9xy-—x)+(8x2-2xy-8x)
21
(—xy+2y2-9)+(x2-—xy-4y2-4)
35
71
(xy-—y+—)-(xy+x-1)
87
(8y-4x-9z2)+(6y+6x-3z2)
(6k2-9k)-(7k2+k-9)
(4a2-2a+7b)-(4a2+7a+6b)
4x2-(7x2-4x+3)-(4x-6)
3y2+(7x2-y)+(3x2-4y2)
(6x2+6xy+—x)+(2x2+8xy+9x)
42
(—xy-3y2-9)+(x2+—xy+9y2+4)
53
91
(xy+—y-—)-(xy-x-8)
84
(9y-x-5z2)-(6y+4x-2z2)
(7k2+7k)-(2k2+7k-5)
(6a2-7a-8b)+(3a2-8a-7b)
7x2-(7x2+x-7)-(6x-2)
8y2-(6x2+y)-(6x2+2y2)
7
(7x2-6xy-—x)-(2x2+xy+9x)
19
(—xy-2y2-7)+(x2+—xy+9y2+8)
58
62
(xy+—y+—)-(xy+x+2)
73
(y+9x+z2)-(4y+x-2z2)
(3k2-6k)-(3k2-2k+9)
(4a2+7a-b)+(5a2+a-3b)
6x2+(2x2-2x+9)+(4x-5)
8y2-(x2+y)-(8x2-y2)
9
(6x2-2xy-—x)+(7x2+3xy+7x)
(—xy-6y2-3)+(x2+—xy-2y2+9)
48
51
(xy+—y-—)-(xy-x+1)
48
(9y+6x+5z2)+(8y+7x-8z2)
(5k2+8k)-(7k2-2k-9)
(6a2+a-5b)+(9a2-9a+3b)
2x2-(4x2-8x-9)+(6x+3)
4y2+(4x2+y)-(3x2-y2)
(2x2+3xy+—x)-(8x2+5xy-9x)
(—xy-5y2+2)+(x2-—xy+4y2+7)
81
(xy-—y-—)+(xy-x+6)
(6y+x-9z2)-(9y-4x-3z2)
(5k2+6k)-(8k2-9k-8)
(4a2+6a+6b)-(5a2+6a+5b)
x2+(6x2+6x-2)+(4x+6)
7y2-(5x2-y)+(7x2-3y2)
(3x2+9xy-—x)+(6x2-7xy+9x)
(—xy+8y2-5)+(x2+—xy+6y2+2)
(xy+—y+—)-(xy-x+1)
35
(2y-7x+5z2)-(2y-3x-3z2)