初一数学下册计算题天天练 14.docx
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初一数学下册计算题天天练 14.docx
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初一数学下册计算题天天练14
(7k2+k)-(3k2-3k+9)
(4a2+3a-2b)-(4a2-8a+4b)
3x2-(7x2+9x-9)-(6x-4)
9y2-(5x2-y)+(5x2+2y2)
1
(x2-3xy-—x)-(3x2-9xy-2x)
5
11
(—xy+5y2+3)+(x2+—xy+6y2+6)
68
11
(xy-—y+—)-(xy+x-4)
47
(8y+6x-z2)-(5y+8x+5z2)
(4m2+m-6)+(5m+4n+4)
(8x2+8x+2)+7(8x2+3x)
-7(x2+7)-8(x2+4)
-(x2y+2xy+9)+7(x2y-5xy-3)
68
(—x2-17x-14y)-(—x2-10x+27y)
77
11
-—(9k3+8k2+4)-—(6k3+9k2-9k)
45
(2k2-8k)-(9k2+5k-9)
(9a2-9a+3b)+(6a2-3a+7b)
9x2-(9x2+7x+1)+(8x+7)
5y2-(3x2+y)-(4x2-5y2)
5
(8x2-xy-—x)+(3x2-7xy+4x)
6
14
(—xy+9y2-4)+(x2-—xy-7y2+7)
43
49
(xy+—y-—)-(xy-x+1)
58
(9y-2x+6z2)-(8y+x-5z2)
(8m2+7m-8)-(6m+2n+7)
(6x2-3x+4)+2(x2-9x)
-4(x2-7)-7(x2+4)
-(x2y-4xy+8)+8(x2y+7xy+4)
79
(—x2+23x+12y)+(—x2-16x-13y)
88
11
-—(9k3-k2-8)-—(6k3+k2-1k)
64
(3k2+5k)-(8k2-9k+9)
(9a2+7a-8b)-(5a2+2a+b)
7x2+(4x2+6x-4)+(8x-1)
4y2-(5x2+y)-(2x2-3y2)
1
(9x2+8xy+—x)-(2x2+3xy-4x)
5
18
(—xy+4y2+3)+(x2+—xy-y2+5)
57
45
(xy+—y+—)-(xy+x-7)
56
(8y-6x-2z2)-(9y-3x-z2)
(9m2-8m-5)-(3m-6n+3)
(5x2-3x+4)-3(6x2+6x)
-4(x2-2)+2(x2-5)
-(x2y+3xy-4)-6(x2y-6xy+5)
16
(—x2+14x+19y)+(—x2+17x-18y)
55
11
-—(k3-4k2+7)-—(6k3+8k2+7k)
65
(2k2-9k)+(9k2+2k-9)
(8a2-4a+8b)+(a2+3a+3b)
x2+(8x2-7x+4)+(5x-5)
4y2-(8x2+y)-(4x2+3y2)
1
(7x2-8xy+—x)-(4x2-5xy+4x)
4
55
(—xy+9y2-3)+(x2+—xy+6y2-5)
66
29
(xy-—y+—)+(xy+x-2)
38
(8y-8x+5z2)+(y+9x-2z2)
(6m2-9m-1)-(6m-3n+5)
(6x2+8x-4)-2(7x2+2x)
-5(x2+9)-4(x2-6)
-(x2y-8xy+9)+6(x2y+5xy-7)
22
(—x2-14x+12y)+(—x2+10x+21y)
33
11
-—(k3-8k2+1)+—(5k3+6k2+2k)
26
(4k2-8k)-(k2+7k+3)
(9a2-4a-2b)-(2a2+2a+5b)
3x2+(5x2-6x+8)+(5x+9)
9y2+(7x2-y)-(8x2-7y2)
2
(5x2+3xy+—x)+(6x2+2xy+3x)
3
96
(—xy+y2-7)+(x2+—xy+4y2+3)
85
21
(xy+—y+—)-(xy-x+4)
34
(y-6x-4z2)-(5y-9x+8z2)
(5m2+9m+6)-(8m+3n+5)
(3x2-2x+5)-5(2x2+7x)
-6(x2+6)-3(x2+2)
-(x2y+8xy+8)-7(x2y+4xy-3)
75
(—x2+11x-20y)+(—x2-16x-17y)
66
11
-—(2k3+3k2-4)-—(3k3-5k2+4k)
42
(k2-8k)+(2k2+5k+8)
(4a2-2a+5b)+(9a2+a-4b)
5x2+(x2-7x+6)-(2x+8)
6y2+(4x2+y)-(8x2-8y2)
1
(8x2+9xy-—x)+(9x2-4xy+2x)
3
53
(—xy+5y2-8)-(x2-—xy+3y2-8)
64
61
(xy-—y+—)-(xy-x+8)
53
(6y-x-8z2)+(8y+5x-6z2)
(7m2+6m-1)-(2m+2n+3)
(3x2+4x-7)-8(8x2+2x)
-7(x2-5)+9(x2+5)
-(x2y-4xy-8)-5(x2y-9xy+2)
17
(—x2-18x-13y)-(—x2-14x+19y)
66
11
-—(8k3+2k2-2)-—(k3-6k2+3k)
62
(6k2+k)+(k2+4k-2)
(a2-a+3b)+(7a2-3a-3b)
4x2+(7x2-5x+6)-(9x-7)
9y2-(8x2+y)+(x2+9y2)
1
(x2+3xy-—x)+(2x2+3xy-8x)
6
18
(—xy+y2-9)+(x2-—xy+8y2+8)
77
61
(xy-—y-—)+(xy-x+6)
57
(7y+3x-5z2)-(8y+4x-8z2)
(2m2-8m+7)-(4m-n-1)
(2x2-8x-3)-2(7x2+3x)
-4(x2-5)-6(x2+7)
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