七年级数学下册计算题28.docx
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七年级数学下册计算题28
(7k2-9k)+(5k2-3k+7)
(8a2+9a+6b)-(3a2-2a-b)
2x2-(4x2-6x-9)-(x-9)
9y2+(5x2-y)-(6x2+7y2)
4
(6x2-3xy+—x)+(4x2-8xy+x)
3
15
(—xy-9y2-8)+(x2-—xy+5y2+2)
34
18
(xy-—y-—)+(xy-x+7)
57
(8y-4x+9z2)+(3y+2x+6z2)
(k2+4k)-(9k2-3k+9)
(7a2+8a-6b)+(5a2-9a-8b)
x2-(5x2+6x-4)-(4x+2)
7y2-(8x2-y)+(6x2+6y2)
1
(2x2-9xy-—x)-(6x2-8xy-8x)
6
17
(—xy-y2-3)+(x2-—xy-4y2-3)
66
15
(xy+—y+—)-(xy-x+8)
86
(3y+2x+5z2)-(3y-3x-6z2)
(5k2-8k)-(3k2-2k+4)
(6a2+a-9b)-(6a2-4a+2b)
8x2-(7x2-8x-7)-(6x+2)
8y2-(4x2-y)-(4x2-2y2)
4
(3x2+4xy-—x)+(5x2-5xy+x)
5
21
(—xy+5y2-3)+(x2+—xy-5y2-1)
38
29
(xy-—y+—)+(xy+x+4)
38
(6y-7x+3z2)+(4y+9x+3z2)
(4k2+3k)+(6k2-3k-8)
(a2+5a+b)+(5a2-6a-b)
5x2+(9x2+x-7)+(6x-2)
2y2+(7x2+y)+(7x2+6y2)
1
(8x2+3xy+—x)+(3x2-3xy+7x)
6
44
(—xy-3y2+5)+(x2+—xy+3y2-7)
33
17
(xy+—y-—)-(xy+x+6)
88
(7y+x+5z2)+(9y+4x-2z2)
(8k2+6k)+(3k2-k+9)
(6a2+2a-2b)-(9a2+a+3b)
5x2-(5x2-8x+2)+(2x-5)
2y2+(3x2+y)+(8x2+y2)
1
(8x2-xy+—x)+(5x2-7xy+8x)
5
28
(—xy+4y2+6)+(x2-—xy+6y2-8)
37
15
(xy-—y+—)-(xy-x-6)
34
(7y-4x-3z2)+(9y-7x+6z2)
(k2-2k)-(5k2-4k-8)
(3a2-8a+9b)-(a2+3a+4b)
7x2+(6x2-7x-8)-(8x+9)
3y2+(2x2+y)-(7x2-6y2)
1
(6x2+8xy+—x)-(8x2-3xy-7x)
7
11
(—xy+6y2-1)+(x2+—xy+2y2-1)
78
31
(xy+—y+—)+(xy-x-9)
44
(5y-4x-8z2)+(5y+6x+4z2)
(k2+5k)+(2k2-6k+3)
(3a2-9a-3b)-(3a2+5a+b)
2x2+(7x2-9x-4)+(4x+4)
5y2+(2x2+y)-(2x2-6y2)
5
(3x2+9xy-—x)+(4x2+2xy-x)
4
16
(—xy+9y2-2)-(x2+—xy+3y2-6)
65
55
(xy-—y-—)-(xy-x+9)
46
(4y+7x+7z2)-(3y-2x+4z2)
(3k2-5k)+(9k2+4k-5)
(2a2+3a+7b)+(7a2+9a+2b)
7x2-(6x2-3x-9)+(5x-2)
y2+(8x2-y)+(6x2+2y2)
6
(4x2+3xy+—x)-(5x2-4xy-7x)
5
61
(—xy-8y2-5)+(x2+—xy+2y2+4)
77
11
(xy-—y+—)-(xy-x-1)
87
(3y-4x+4z2)+(4y-7x+z2)
(8k2-2k)-(9k2-2k-9)
(9a2+a+9b)+(9a2+3a-2b)
8x2-(2x2+6x+3)-(4x-1)
4y2+(3x2-y)-(4x2-y2)
9
(4x2-2xy-—x)+(5x2-7xy-5x)
8
71
(—xy-3y2+2)+(x2-—xy+9y2+8)
85
15
(xy-—y-—)-(xy-x-4)
74
(9y+3x+6z2)-(9y+6x-2z2)
(7k2-8k)-(k2+k-4)
(a2+9a+9b)+(2a2+5a-3b)
8x2-(8x2-4x+4)-(2x+8)
7y2+(2x2-y)-(3x2-7y2)
1
(5x2-5xy-—x)-(2x2+xy+4x)
3
61
(—xy-8y2-5)-(x2-—xy+2y2-4)
77
11
(xy-—y+—)+(xy-x+8)
76
(3y+7x-8z2)+(5y-4x-2z2)
(9k2+k)-(k2-6k+1)
(a2+3a-4b)-(3a2+6a-6b)
3x2-(2x2+x+9)+(3x+6)
5y2-(5x2+y)+(9x2+2y2)
1
(9x2-2xy-—x)-(2x2+7xy+x)
4
56
(—xy+9y2-9)-(x2-—xy-y2-6)
65
15
(xy+—y-—)-(xy-x+4)
34
(y-4x-8z2)-(3y-2x-9z2)
(3k2+5k)+(k2-7k-7)
(8a2-2a-3b)-(4a2-5a-5b)
5x2-(6x2+3x+9)+(9x+4)
8y2-(4x2-y)-(7x2-4y2)
9
(2x2-4xy-—x)-(4x2+xy-8x)
8
16
(—xy+2y2-5)+(x2+—xy+3y2+5)
45
55
(xy-—y-—)+(xy-x-6)
46
(3y+7x+z2)+(6y-8x-8z2)
(7k2+6k)+(7k2+3k+1)
(8a2-9a+7b)+(a2+7a+9b)
x2-(3x2-7x-7)-(3x-9)
6y2-(7x2-y)+(4x2+5y2)
1
(2x2-xy+—x)+(9x2-2xy+7x)
8
59
(—xy+7y2+8)+(x2-—xy+6y2-8)
68
46
(xy-—y+—)-(xy+x+4)
35
(2y+9x-4z2)-(7y-5x+9z2)
(3k2-2k)-(2k2-8k-6)
(9a2+a-3b)-(a2-4a+9b)
7x2-(5x2+x-9)-(6x+7)
4y2-(3x2-y)-(9x2+y2)
8
(8x2+5xy-—x)-(7x2-6xy-8x)
7
13
(—xy+6y2-3)-(x2+—xy+9y2+7)
54
91
(xy-—y+—)-(xy-x+9)
84
(8y+x-2z2)-(5y+3x+3z2)
(2k2+4k)-(3k2+4k-6)
(7a2+7a+3b)-(a2-3a-8b)
4x2+(9x2-5x-4)-(9x-7)
y2+(4x2+y)+(2x2+5y2)
1
(x2+2xy-—x)-(3x2-5xy-4x)
7
13
(—xy+y2-8)+(x2-—xy-4y2+5)
44
74
(xy+—y+—)-(xy+x+7)
63
(3y-5x-8z2)-(7y-8x-6z2)
(7k2+8k)+(6k2-k+6)
(8a2-3a+7b)-(9a2+2a+4b)
6x2+(4x2-2x+1)+(2x-1)
7y2-(2x2+y)+(8x2-2y2)
7
(5x2-xy+—x)+(7x2-6xy-4x)
6
16
(—xy+7y2-2)+(x2+—xy-2y2+6)
85
83
(