北师大版七年级数学下册整式的加减法计算题精选 258.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258
x2-(2x2+9x+6)-(9x+2)
9y2-(4x2+y)-(7x2-3y2)
1
(5x2-2xy+—x)+(4x2-9xy-5x)
3
11
(—xy-y2-2)+(x2+—xy+9y2+7)
54
41
(xy+—y-—)+(xy-x-8)
38
(6y-7x-9z2)+(5y-9x+8z2)
(9k2+4k)-(5k2-2k-2)
(a2-4a+4b)-(2a2-4a+9b)
8x2+(9x2+6x+7)+(7x-1)
8y2+(6x2+y)+(x2-6y2)
7
(3x2-8xy-—x)+(8x2-2xy-3x)
8
64
(—xy+2y2+7)-(x2-—xy-8y2-7)
53
81
(xy-—y-—)-(xy+x-2)
75
(8y-x-4z2)+(5y+7x+6z2)
(4k2-9k)-(6k2-7k+1)
(a2-5a+3b)+(4a2+3a+8b)
x2-(7x2+4x+4)-(5x+4)
8y2-(8x2+y)-(7x2+9y2)
1
(2x2+3xy-—x)-(7x2+5xy-7x)
4
67
(—xy+3y2+5)-(x2+—xy-8y2+6)
76
11
(xy-—y+—)-(xy+x-8)
35
(6y-6x-2z2)+(8y-7x+5z2)
(7k2-3k)-(6k2+8k-8)
(2a2+6a+2b)-(6a2-5a-2b)
8x2+(3x2+3x+8)+(9x-6)
7y2+(3x2-y)+(x2+6y2)
8
(7x2-xy+—x)-(6x2+3xy-5x)
7
71
(—xy-9y2-2)-(x2+—xy+y2-5)
85
71
(xy-—y-—)+(xy+x-4)
63
(2y-7x+5z2)-(3y-3x+9z2)
(k2-7k)+(3k2-2k+5)
(3a2+7a+b)-(6a2+8a-2b)
2x2-(4x2+x+5)+(3x-2)
2y2+(3x2-y)+(x2+5y2)
8
(6x2+4xy-—x)-(2x2+7xy+4x)
7
41
(—xy-3y2+1)+(x2-—xy-4y2+2)
55
19
(xy-—y-—)+(xy+x-4)
78
(6y+6x-8z2)+(4y-8x+9z2)
(3k2-4k)-(6k2-7k+5)
(4a2+8a-9b)-(6a2-6a-3b)
8x2-(3x2-x+4)-(7x+2)
4y2-(7x2+y)+(9x2+8y2)
5
(4x2+6xy-—x)+(7x2+2xy-3x)
6
11
(—xy-4y2+8)+(x2-—xy-9y2+1)
76
11
(xy-—y-—)+(xy-x-7)
56