初一数学下册计算题天天练 46.docx
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初一数学下册计算题天天练 46.docx
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初一数学下册计算题天天练46
2x2-(7x2+7x-5)+(9x-2)
y2-(6x2-y)+(9x2+7y2)
7
(3x2-5xy+—x)-(5x2-9xy+2x)
6
67
(—xy+8y2-1)-(x2+—xy+2y2+2)
78
11
(xy-—y+—)+(xy+x+2)
53
(3y-3x+6z2)+(5y+3x+6z2)
(3m2+6m+8)-(8m+8n+2)
(3x2+4x-8)-3(9x2+7x)
-8(x2+9)-5(x2-2)
-(x2y+3xy+3)-2(x2y+9xy+2)
81
(—x2+22x-19y)+(—x2-15x-13y)
77
11
-—(3k3+8k2-2)+—(7k3-4k2-5k)
45
(5k2+9k)+(6k2+3k+3)
(8a2-a+b)+(2a2-5a+b)
6x2+(2x2-6x-5)+(3x+5)
6y2-(7x2-y)-(9x2-7y2)
5
(9x2-4xy-—x)+(8x2+4xy-5x)
4
52
(—xy+y2-9)-(x2-—xy-7y2-7)
43
81
(xy+—y-—)+(xy-x-9)
75
(y+2x+z2)-(7y-5x+4z2)
(8m2-3m-7)-(m-9n+5)
(6x2+6x+6)-8(5x2-7x)
-7(x2-3)+8(x2-5)
-(x2y+4xy-2)+9(x2y+8xy-9)
15
(—x2+16x-15y)-(—x2+19x-14y)
66
11
-—(k3+3k2-5)+—(2k3-6k2-8k)
44
(4k2-7k)-(8k2-4k-3)
(6a2+2a+3b)+(a2+4a-8b)
7x2+(5x2+8x+6)-(3x-5)
7y2-(4x2-y)+(2x2-3y2)
5
(9x2+9xy+—x)+(7x2+2xy-4x)
6
36
(—xy+3y2+9)+(x2+—xy+8y2-6)
47
63
(xy-—y-—)+(xy+x-9)
74
(6y-7x-9z2)-(y+9x+3z2)
(m2+6m-5)+(9m+4n-7)
(3x2+x+2)+5(6x2-x)
-7(x2-8)+4(x2-6)
-(x2y-6xy-2)+6(x2y+5xy-2)
61
(—x2-21x+13y)-(—x2-18x+29y)
77
11
-—(k3+4k2+1)+—(5k3+3k2-9k)
45
(5k2-3k)-(3k2+3k+5)
(6a2+8a-8b)-(5a2-2a-6b)
8x2-(3x2+3x+2)+(x-1)
y2+(9x2+y)-(2x2-y2)
2
(3x2+7xy+—x)+(4x2+xy+7x)
3
55
(—xy+2y2-1)+(x2+—xy-2y2+4)
64
11
(xy-—y+—)-(xy-x+3)
33
(9y-x+z2)+(7y+8x-4z2)
(6m2+7m-8)+(m-5n+3)
(4x2+5x-5)-7(4x2+5x)
-5(x2+6)-6(x2+7)
-(x2y-3xy+5)+9(x2y-9xy-7)
11
(—x2-25x+14y)+(—x2-10x+12y)
66
11
-—(8k3+4k2+3)-—(2k3-5k2+5k)
26
(3k2-5k)+(k2-4k+8)
(2a2-3a+4b)-(9a2-3a+3b)
7x2-(x2+7x-2)+(7x-9)
8y2-(3x2+y)+(8x2-9y2)
1
(4x2-6xy-—x)+(9x2-4xy-3x)
5
31
(—xy+6y2+6)+(x2+—xy+4y2-6)
43
74
(xy-—y+—)-(xy+x-5)
85
(9y-x+z2)-(3y-9x-4z2)
(m2+5m+5)-(5m-n+9)
(5x2+9x-2)-3(6x2-x)
-9(x2-8)+3(x2-2)
-(x2y-9xy+8)-8(x2y+5xy-9)
44
(—x2+25x-19y)+(—x2+20x-18y)
33
11
-—(2k3-7k2+7)-—(k3-k2-7k)
26
(6k2+2k)-(k2+8k+5)
(5a2+9a+3b)+(a2-7a-2b)
4x2+(6x2-x+9)-(9x-2)
y2-(2x2-y)-(5x2+y2)
4
(7x2+8xy-—x)+(4x2+5xy-9x)
5
11
(—xy-7y2+5)-(x2+—xy+2y2+7)
58
69
(xy+—y-—)+(xy+x+1)
58
(3y+6x-5z2)-(4y+5x-5z2)
(9m2+4m+7)-(4m-2n+1)
(4x2-8x-4)-2(2x2+7x)
-8(x2-2)+2(x2+7)
-(x2y-4xy-2)-5(x2y-4xy+4)
41
(—x2-30x+13y)-(—x2+11x-26y)
55
11
-—(6k3-2k2+2)+—(4k3-7k2+7k)
23
(5k2+5k)+(7k2-k+9)
(9a2+3a-7b)-(2a2+2a+7b)
9x2+(9x2+4x-4)+(8x+8)
5y2+(7x2-y)+(5x2-5y2)
4
(5x2+6xy-—x)+(3x2-9xy+2x)
5
61
(—xy-3y2+6)-(x2-—xy+5y2-6)
76
16
(xy-—y-—)-(xy+x+1)
85
(5y+x-5z2)+(3y+5x+7z2)
(4m2+m-2)-(6m+3n-6)
(6x2-8x+6)-7(9x2-8x)
-6(x2-1)-2(x2-8)
-(x2y-3xy-9)+3(x2y+5xy-4)
18
(—x2-10x-11y)-(—x2-13x+29y)
77
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