北师大版七年级数学下册整式的加减法计算题精选 309.docx
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北师大版七年级数学下册整式的加减法计算题精选309
(6a2+4a+3b)-(2a2+8a-6b)
8x2+(2x2+7x+3)-(5x+1)
9y2-(4x2-y)+(2x2-y2)
1
(4x2-7xy+—x)+(2x2+2xy-7x)
4
81
(—xy+7y2-5)+(x2+—xy+9y2-6)
74
11
(xy-—y-—)-(xy-x+9)
68
(5y-6x-4z2)+(y-6x-5z2)
(5k2-8k)-(4k2-7k-1)
(4a2+9a+2b)+(2a2+a-b)
3x2-(5x2-8x-7)+(6x-8)
5y2-(7x2-y)+(9x2-y2)
1
(x2+5xy-—x)-(3x2-2xy-2x)
6
73
(—xy-4y2+9)-(x2-—xy-y2+9)
64
79
(xy-—y-—)+(xy+x+6)
88
(2y-6x-7z2)-(4y-4x+6z2)
(9k2-9k)+(2k2+3k+1)
(a2-2a-9b)-(8a2-3a-4b)
6x2-(3x2+3x-6)-(2x-3)
7y2+(7x2-y)+(4x2+9y2)
7
(4x2-3xy+—x)-(x2-4xy-4x)
6
11
(—xy-9y2-4)-(x2-—xy+7y2+4)
53
19
(xy-—y-—)-(xy-x+7)
88
(8y-7x-3z2)-(7y+6x-7z2)
(6k2-6k)+(8k2-5k-1)
(2a2-a-3b)-(2a2+4a-6b)
8x2+(5x2+8x+2)+(7x-8)
5y2+(5x2-y)+(6x2+3y2)
6
(8x2-6xy+—x)+(4x2+7xy-5x)
5
11
(—xy-2y2+3)-(x2-—xy-3y2-4)
48
89
(xy+—y-—)+(xy-x-5)
78
(2y-3x-7z2)+(6y-7x+z2)
(9k2-3k)+(4k2-8k+7)
(7a2-3a+7b)-(3a2-5a-5b)
8x2-(2x2+7x-1)+(x-1)
5y2+(x2+y)-(5x2+y2)
8
(3x2+3xy+—x)+(6x2+8xy-9x)
7
74
(—xy+y2+1)+(x2+—xy-y2+6)
65
17
(xy-—y-—)-(xy+x+1)
88
(7y+4x-4z2)+(3y+6x-9z2)
(k2-9k)+(k2-k-4)
(a2+6a-9b)+(4a2-4a-8b)
4x2+(4x2+3x-7)+(7x-3)
9y2-(x2+y)-(5x2-8y2)
1
(7x2-4xy-—x)+(7x2-7xy+8x)
5
11
(—xy-7y2+9)-(x2-—xy-5y2+8)
66