北师大版七年级数学下册整式的加减法计算题精选 528Word格式文档下载.docx
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(5x2-3xy+—x)-(8x2-9xy-4x)
8
78
(—xy-y2-8)+(x2-—xy-y2+9)
87
31
(xy-—y-—)+(xy-x-4)
45
(6y+6x+7z2)-(9y+9x-4z2)
(2k2-6k)+(3k2-8k+5)
(9a2+6a-9b)-(8a2+a+b)
x2-(5x2+7x+3)-(7x+3)
y2+(8x2+y)+(3x2+y2)
(7x2-8xy-—x)+(3x2+2xy+x)
71
(—xy+5y2-3)+(x2-—xy-8y2+6)
86
81
(xy+—y-—)-(xy-x-5)
77
(5y-2x-8z2)-(y-9x+6z2)
(3k2+9k)-(9k2+5k+1)
(5a2-5a-b)+(6a2-3a-4b)
5x2-(4x2-4x+6)+(2x-8)
y2+(x2-y)+(8x2+7y2)
4
(5x2-3xy-—x)+(4x2+9xy-x)
3
81
(—xy-2y2-1)+(x2+—xy-7y2-5)
74
17
(xy-—y+—)+(xy+x+6)
86
(6y+5x+4z2)+(3y+2x-z2)
(2k2-2k)-(4k2+6k+9)
(a2+5a-b)-(a2-6a-6b)
4x2-(x2-7x-6)-(9x-3)
3y2+(9x2-y)-(6x2+8y2)
1
(8x2-2xy-—x)+(x2+xy-7x)
5
65
(—xy-6y2+4)-(x2-—xy-5y2+4)
61
(xy+—y+—)-(xy+x-4)
74
(2y-2x+4z2)-(3y-8x+2z2)
(5k2+7k)-(6k2-9k+2)
(a2+9a-4b)+(5a2+3a-8b)
4x2-(8x2-8x+3)+(3x+8)
3y2-(5x2+y)+(4x2+4y2)
(5x2+2xy-—x)+(8x2+9xy+x)
6
51
(—xy+4y2-1)+(x2+—xy-6y2+3)
44
91
87
(5y+9x-3z2)-(8y+8x+z2)
(6k2-7k)+(9k2+8k-9)
(4a2+6a+3b)-(2a2+4a+6b)
2x2-(7x2-2x-5)-(5x+7)
9y2+(7x2-y)+(4x2+6y2)
(2x2-4xy-—x)+(2x2+4xy+9x)