初一数学下册计算题天天练 3.docx
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初一数学下册计算题天天练 3.docx
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初一数学下册计算题天天练3
16
(—xy-4y2-1)+(x2+—xy+3y2+8)
35
65
(xy-—y-—)+(xy+x+9)
76
(4y-x+4z2)-(3y+6x+3z2)
(4m2+6m+2)-(3m-9n+8)
(9x2+4x+5)-8(3x2-x)
-7(x2-7)-3(x2-9)
-(x2y-2xy-3)+6(x2y-3xy-7)
15
(—x2-24x-15y)-(—x2+11x+11y)
66
11
-—(4k3+3k2-1)+—(8k3+4k2+2k)
46
(9k2+9k)+(6k2-4k-4)
(2a2-5a+3b)-(8a2+7a-3b)
4x2-(4x2-4x-9)-(9x-1)
9y2-(8x2+y)+(9x2+4y2)
1
(4x2-2xy-—x)+(9x2-9xy-7x)
6
68
(—xy+4y2-1)+(x2+—xy+8y2+4)
77
45
(xy+—y+—)-(xy+x-1)
36
(5y-6x+4z2)-(2y-9x-6z2)
(7m2-6m+1)-(7m+8n+4)
(5x2-8x-2)-8(2x2+9x)
-8(x2+4)-5(x2+1)
-(x2y+7xy+3)+6(x2y+5xy+9)
11
(—x2-13x-13y)-(—x2+12x-11y)
66
11
-—(8k3-8k2+4)+—(k3+5k2-9k)
46
(4k2+2k)-(2k2+8k+6)
(5a2-5a+4b)+(4a2-2a+9b)
2x2-(x2-x-3)-(9x+6)
y2+(3x2+y)-(3x2+8y2)
1
(2x2+5xy-—x)+(x2-9xy-5x)
5
45
(—xy+4y2-9)+(x2-—xy+5y2+3)
56
11
(xy-—y+—)+(xy-x+4)
36
(8y-2x+5z2)+(6y+2x+5z2)
(m2+8m-3)+(7m-5n+5)
(x2-3x-2)-9(5x2+6x)
-4(x2-8)+6(x2-4)
-(x2y-3xy+2)-5(x2y-2xy+7)
11
(—x2-15x+11y)+(—x2+15x-12y)
66
11
-—(8k3-6k2+7)-—(6k3+7k2-1k)
23
(2k2-2k)+(5k2-2k-1)
(4a2-2a-2b)+(7a2-2a-4b)
x2-(9x2-8x+5)-(4x-7)
7y2+(8x2+y)-(x2-8y2)
6
(3x2-6xy+—x)+(4x2-2xy-5x)
5
66
(—xy-5y2-5)-(x2-—xy-8y2-9)
77
62
(xy+—y-—)-(xy+x+1)
53
(7y-5x-4z2)-(2y+3x-8z2)
(4m2+m-3)-(3m+2n-1)
(8x2+8x+4)-8(9x2-9x)
-6(x2-5)-4(x2-1)
-(x2y-2xy-8)-6(x2y-4xy+6)
97
(—x2-18x+18y)+(—x2+17x-23y)
88
11
-—(9k3+9k2+3)+—(9k3-3k2+5k)
45
(9k2+7k)-(8k2+9k-4)
(3a2-9a+7b)-(2a2-6a-7b)
5x2-(2x2-9x+3)-(2x-1)
2y2+(x2+y)+(6x2-5y2)
3
(6x2+2xy+—x)-(2x2+8xy+3x)
4
62
(—xy+y2-1)+(x2-—xy+7y2-2)
73
17
(xy-—y+—)+(xy+x-5)
48
(6y+7x+6z2)-(7y+7x+3z2)
(m2-2m-6)-(4m-8n-6)
(5x2+2x-4)+8(6x2-x)
-9(x2+5)-5(x2-8)
-(x2y+7xy-2)-3(x2y-2xy+9)
51
(—x2+16x-18y)+(—x2+18x+26y)
44
11
-—(4k3-2k2-5)-—(5k3-4k2-4k)
62
(9k2-3k)-(7k2+7k-2)
(8a2-4a-6b)+(3a2-4a-8b)
5x2-(2x2-4x-1)+(9x+2)
8y2-(4x2-y)-(6x2+2y2)
3
(8x2+3xy-—x)+(2x2-3xy-6x)
4
46
(—xy+9y2-9)+(x2+—xy-8y2-1)
55
11
(xy+—y+—)-(xy+x-1)
65
(y-x+7z2)-(y-x+9z2)
(4m2+3m-6)+(4m+4n+5)
(7x2+2x-8)-8(6x2+8x)
-5(x2+1)-9(x2+3)
-(x2y-3xy+8)+7(x2y-3xy-5)
51
(—x2+19x+18y)+(—x2-10x+24y)
44
11
-—(9k3-2k2-1)-—(3k3-3k2+3k)
63
(k2+k)-(4k2+k+6)
(6a2+a-3b)+(7a2+6a+4b)
x2-(6x2-6x-3)-(9x-6)
7y2-(9x2-y)-(3x2-8y2)
9
(7x2-2xy+—x)-(8x2+7xy+x)
8
47
(—xy-4y2+8)-(x2-—xy-2y2-9)
38
92
(xy+—y-—)-(xy+x-8)
83
(4y-8x+9z2)+(9y-7x+9z2)
(4m2+8m+6)-(2m-9n+5)
(3x2+7x-3)+4(x2+9x)
-3(x2+5)-4(x2+2)
-(x2y+7xy-6)-5(x2y+6xy+9)
12
(—x2-20x+14y)+(—x2-20x-18y)
33
11
-—(9k3-9k2-6)+—(2k3-9k2+6k)
65
(9k2-8k)+(9k2+k+1)
(2a2+9a+7b)+(4a2-2a+b)
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