初中数学七年级下册计算题精选441.docx
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初中数学七年级下册计算题精选441
(5k2+4k)+(7k2+5k-8)
(2a2+6a-8b)+(4a2+9a+8b)
4x2+(5x2-5x-1)+(8x+7)
5y2-(7x2-y)-(6x2+7y2)
1
(8x2-4xy+—x)-(x2-2xy+4x)
7
18
(—xy+9y2+8)+(x2-—xy+6y2+8)
87
81
(xy-—y-—)+(xy-x-1)
77
(9y-2x-z2)+(4y-9x+4z2)
(5k2+6k)+(4k2-2k+2)
(5a2+9a+6b)+(2a2+5a-9b)
9x2-(5x2+6x+4)+(9x+3)
6y2+(4x2+y)+(x2+4y2)
5
(6x2-8xy-—x)+(x2+xy-5x)
6
16
(—xy+7y2+8)-(x2-—xy+7y2+5)
87
16
(xy+—y+—)+(xy+x-3)
77
(3y+5x-9z2)+(7y+2x+3z2)
(8k2+7k)+(2k2-5k-7)
(8a2-a-9b)+(2a2-7a-b)
x2-(6x2-6x-1)+(5x+8)
3y2+(8x2-y)+(x2+4y2)
6
(x2+9xy+—x)-(6x2+6xy-7x)
7
91
(—xy+4y2+8)+(x2+—xy+6y2+1)
85
11
(xy-—y-—)-(xy-x-2)
68
(6y-7x-6z2)-(9y+3x-9z2)
(8k2-3k)-(8k2-2k+3)
(4a2-6a+b)-(3a2+a-9b)
6x2-(x2-8x+4)-(4x-1)
2y2-(4x2-y)+(3x2-7y2)
4
(9x2-2xy+—x)-(x2-5xy+2x)
5
16
(—xy-5y2+7)-(x2-—xy+9y2+8)
55
18
(xy-—y+—)+(xy-x+3)
37
(8y-4x-6z2)+(3y+2x+6z2)
(4k2-9k)+(8k2+8k+9)
(8a2+2a+4b)+(3a2+4a+4b)
3x2+(9x2-4x+3)-(x-7)
6y2+(2x2-y)+(5x2+3y2)
5
(9x2-6xy+—x)-(6x2+4xy-8x)
6
37
(—xy+y2+6)+(x2-—xy+6y2-2)
46
51
(xy-—y-—)+(xy-x+4)
68
(9y+2x-2z2)-(2y-6x-4z2)
(9k2-k)+(6k2-5k-6)
(9a2-9a-9b)+(5a2+3a+6b)
3x2+(x2+x-6)+(2x+7)
9y2-(6x2+y)-(9x2+y2)
5
(2x2+7xy-—x)-(3x2+7xy-5x)
6
58
(—xy-8y2+4)-(x2+—xy-4y2-5)
47
18
(xy-—y-—)+(xy+x-9)
57
(6y-3x+5z2)+(4y-6x-2z2)
(5k2+8k)+(4k2+k-2)
(5a2+9a-2b)+(6a2+6a-7b)