北师大版七年级数学下册整式的加减法计算题精选 58.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58
2x2+(4x2-8x-2)-(2x-5)
9y2+(3x2-y)+(9x2-8y2)
1
(6x2+xy-—x)+(7x2-6xy+6x)
5
51
(—xy-6y2-3)+(x2+—xy+2y2-9)
47
38
(xy-—y-—)+(xy+x-4)
47
(3y-2x-z2)-(2y+6x-6z2)
(2k2+7k)-(6k2+7k+7)
(3a2+7a-9b)-(4a2-3a-6b)
6x2+(9x2+2x-3)+(4x-2)
6y2-(2x2-y)+(5x2-7y2)
1
(4x2-4xy+—x)+(9x2-5xy+6x)
7
66
(—xy+9y2-5)+(x2+—xy-3y2+8)
55
14
(xy-—y-—)-(xy-x+5)
65
(2y-6x+8z2)+(3y-6x-5z2)
(8k2-7k)+(k2+k-7)
(5a2+5a+8b)-(4a2-6a-b)
3x2-(2x2+3x+9)-(8x-6)
5y2+(7x2-y)+(2x2+y2)
8
(x2-9xy+—x)-(x2+2xy-3x)
7
81
(—xy-3y2+8)+(x2-—xy-8y2+3)
78
71
(xy+—y+—)-(xy+x-4)
64
(5y-4x+6z2)-(6y+5x+7z2)
(6k2+3k)-(8k2+3k-6)
(7a2+5a-7b)+(3a2-5a+5b)
x2-(x2-6x+1)-(5x+9)
8y2+(7x2+y)-(4x2+8y2)
1
(4x2-5xy+—x)+(5x2+5xy+3x)
5
51
(—xy+7y2-8)+(x2-—xy-9y2-4)
46
12
(xy-—y-—)+(xy+x-1)
43
(5y+5x+3z2)-(2y+7x+6z2)
(6k2-k)-(8k2-k-6)
(a2+8a+6b)+(a2+7a-3b)
8x2-(4x2+2x-6)-(3x+7)
4y2-(3x2-y)+(x2+8y2)
5
(7x2-2xy-—x)+(8x2+9xy+2x)
6
25
(—xy+y2-2)+(x2+—xy+5y2+4)
34
51
(xy+—y-—)+(xy-x+8)
68
(2y-3x-4z2)-(y-6x+6z2)
(3k2+3k)-(5k2+5k+2)
(8a2-5a-b)+(5a2-2a+4b)
5x2+(2x2-6x+3)+(5x-6)
y2-(8x2-y)-(5x2-5y2)
1
(3x2+4xy+—x)+(6x2-5xy+7x)
6
11
(—xy+5y2+1)-(x2+—xy-8y2+7)
68
73
(xy+—y-—)+(xy-x+5)
84