七年级数学下册计算题13.docx
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七年级数学下册计算题13
(3k2+4k)+(5k2+7k-9)
(9a2-6a-8b)+(5a2+9a+7b)
2x2+(3x2+9x-6)-(9x+2)
5y2-(8x2+y)+(4x2-8y2)
2
(x2+4xy+—x)-(2x2-2xy-x)
3
74
(—xy-6y2+3)-(x2+—xy+7y2+3)
85
17
(xy+—y+—)-(xy-x+3)
66
(7y+5x+7z2)-(3y-2x-4z2)
(4k2-3k)-(4k2-7k+1)
(5a2-4a-4b)+(3a2-8a-2b)
3x2-(5x2+7x-3)+(5x+1)
y2+(3x2+y)+(2x2-y2)
6
(4x2-6xy-—x)-(2x2-4xy-5x)
5
71
(—xy-8y2+3)-(x2-—xy+5y2-4)
66
11
(xy-—y+—)+(xy-x-6)
76
(4y-9x-9z2)+(7y-2x+3z2)
(4k2-3k)-(9k2-2k+4)
(a2-8a+b)+(2a2-6a-6b)
6x2+(x2-2x+7)-(3x+8)
9y2+(4x2-y)-(7x2-4y2)
9
(9x2-6xy+—x)-(6x2-8xy+2x)
8
17
(—xy-4y2-6)+(x2+—xy-4y2+9)
78
95
(xy-—y+—)-(xy+x-1)
84
(y-6x+9z2)+(4y-5x+2z2)
(8k2-4k)+(6k2-9k+9)
(a2+6a+7b)+(2a2+5a+9b)
5x2-(3x2-9x-1)-(9x+5)
y2+(6x2-y)+(6x2-6y2)
4
(8x2+5xy+—x)-(5x2+6xy-3x)
5
41
(—xy-7y2+4)+(x2+—xy-3y2-1)
53
35
(xy+—y-—)+(xy+x+3)
46
(8y+9x-3z2)-(5y-4x-6z2)
(9k2-2k)-(5k2+k+1)
(a2-6a+7b)-(3a2+4a-4b)
x2-(9x2-6x-5)+(8x+1)
6y2+(4x2+y)-(6x2-y2)
6
(3x2+2xy-—x)+(5x2+5xy+8x)
5
57
(—xy-3y2-7)+(x2+—xy-5y2+4)
48
41
(xy+—y+—)-(xy-x-2)
37
(y+9x-8z2)+(8y+6x+5z2)
(6k2+8k)-(k2+8k-7)
(a2+5a+b)+(4a2-8a+5b)
x2+(2x2+2x+7)-(9x-4)
y2-(9x2+y)-(x2+y2)
8
(7x2-8xy-—x)+(2x2+7xy+2x)
7
15
(—xy+9y2+4)-(x2+—xy-7y2+5)
34
21
(xy+—y-—)+(xy+x-2)
38
(9y+8x+4z2)-(6y-4x-9z2)
(3k2-2k)-(5k2+5k+3)
(3a2+3a-6b)+(6a2-6a+6b)
5x2+(5x2-2x+3)-(5x-2)
2y2+(4x2+y)+(4x2-4y2)
4
(x2-4xy-—x)+(9x2+6xy-6x)
5
91
(—xy-3y2+1)-(x2-—xy-8y2+2)
83
17
(xy-—y-—)+(xy+x+4)
36
(5y+x+z2)+(6y-8x+7z2)
(k2-k)+(5k2+2k+6)
(5a2+6a+7b)-(8a2-a-7b)
x2+(8x2-3x+2)+(7x-2)
7y2+(6x2-y)+(6x2+9y2)
7
(8x2-9xy-—x)-(7x2+3xy-9x)
8
41
(—xy+3y2+5)-(x2+—xy-y2-8)
55
63
(xy-—y+—)+(xy-x-3)
54
(4y+6x-5z2)+(8y-7x-8z2)
(6k2-6k)+(7k2-6k+5)
(7a2+7a-5b)-(a2-7a-b)
3x2+(4x2+3x+3)+(3x-9)
7y2-(9x2+y)-(2x2-y2)
1
(8x2-7xy+—x)+(x2-xy-2x)
4
19
(—xy+y2-9)-(x2+—xy-6y2-6)
78
79
(xy-—y+—)+(xy-x-1)
88
(y+2x-3z2)+(9y-x+7z2)
(4k2+8k)+(7k2+7k+3)
(7a2-7a-5b)-(2a2+9a+b)
6x2+(5x2-5x+2)-(4x+8)
9y2+(6x2+y)+(6x2+9y2)
1
(8x2+8xy+—x)+(4x2-8xy-x)
4
16
(—xy+9y2-6)+(x2-—xy+7y2-8)
67
41
(xy+—y-—)+(xy-x-6)
55
(y+5x-9z2)+(5y+x-z2)
(7k2+6k)-(9k2-2k+9)
(2a2+3a-9b)+(7a2-7a+8b)
x2+(x2+3x+3)-(x+4)
8y2-(7x2-y)+(4x2+9y2)
8
(7x2-9xy-—x)-(5x2-xy-6x)
7
29
(—xy+9y2-9)-(x2+—xy-7y2+9)
38
97
(xy+—y+—)+(xy+x-2)
86
(9y-x-3z2)-(5y+5x-9z2)
(k2-k)+(5k2+5k-8)
(6a2+6a-9b)+(6a2-9a+6b)
5x2+(5x2+x-4)-(3x+6)
8y2+(9x2+y)+(2x2+3y2)
5
(2x2-4xy-—x)-(4x2-xy+4x)
6
61
(—xy-y2+9)+(x2+—xy+3y2+9)
56
51
(xy-—y+—)+(xy-x-9)
45
(9y-4x-3z2)+(7y+x+3z2)
(7k2-6k)+(k2+3k-8)
(8a2+7a+7b)+(6a2-4a+7b)
9x2+(8x2-6x-7)+(x-8)
7y2-(3x2-y)+(7x2-y2)
3
(4x2-4xy+—x)-(5x2+6xy+5x)
4
11
(—xy-9y2-4)-(x2-—xy-4y2-4)
37
73
(xy+—y-—)+(xy-x+6)
84
(5y+2x-9z2)+(4y-4x-9z2)
(6k2-4k)-(6k2-7k+6)
(2a2+5a+5b)-(5a2-3a-7b)
2x2+(x2+x-4)+(2x+9)
3y2-(3x2-y)-(2x2-6y2)
1
(6x2+7xy-—x)-(7x2-2xy+6x)
4
17
(—xy+y2+1)+(x2-—xy+8y2+8)
66
56
(xy+—y+—)+(xy+x-7)
47
(7y+9x-3z2)+(2y-7x-z2)
(7k2-9k)-(8k2-6k+4)
(8a2-6a+9b)+(2a2+8a-6b)
5x2+(7x2+4x-2)+(7x-3)
3y2+(4x2-y)-(3x2+8y2)
3
(2x2+5xy-—x)-(4x2-9xy+x)
4
14
(—xy-4y2+3)+(x2-—xy+8y2-4)
43
66
(xy+—y-—)+(xy+x-4)
75
(7y+5x-6z2)-(8y-6x-4z2)
(9k2-k)-(9k2+8k-5)
(7a2-9a+2b)+(6a2+a-9b)
7x2-(2x2-x+9)+(8x-7)
3y2-(2x2+y)-(7x2+5y2)
7
(4x2-9xy+—x)-(6x2+xy+5x)
8
15
(—xy-5y2+3)-(x2-—xy-7y2-2)
74
43
(