初一数学下册计算题天天练 44.docx
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初一数学下册计算题天天练44
(m2+m+2)-(2m-2n-4)
(2x2-4x-3)+3(5x2-7x)
-6(x2+8)+8(x2-6)
-(x2y-3xy-6)+6(x2y+3xy+4)
11
(—x2-11x-15y)-(—x2+11x+22y)
77
11
-—(6k3-4k2-5)-—(k3-3k2+8k)
43
(2k2+7k)+(7k2+7k+1)
(5a2+a-5b)-(5a2+7a-7b)
6x2+(3x2-3x-6)+(9x+6)
y2-(4x2+y)+(2x2+2y2)
1
(3x2+8xy-—x)-(2x2+2xy+x)
4
85
(—xy+2y2-7)+(x2+—xy-6y2+1)
74
64
(xy+—y-—)-(xy+x-7)
73
(3y+x-4z2)-(7y-2x-4z2)
(9m2+3m+8)-(9m-n+6)
(8x2-4x+4)+9(2x2+9x)
-5(x2-8)+2(x2+8)
-(x2y-2xy-2)+5(x2y-4xy-6)
81
(—x2-10x-19y)-(—x2+19x+20y)
77
11
-—(5k3+2k2+8)+—(5k3-k2-2k)
25
(5k2-7k)-(9k2+3k-6)
(8a2-a-b)-(6a2+7a-5b)
9x2+(6x2+7x-7)+(2x+6)
6y2+(4x2+y)-(7x2+4y2)
9
(3x2+6xy+—x)+(7x2-3xy-7x)
8
71
(—xy+4y2-8)-(x2-—xy-4y2-7)
68
94
(xy+—y+—)+(xy-x+2)
85
(8y-3x-6z2)-(7y+x-7z2)
(3m2-5m+7)+(4m-7n+3)
(9x2+9x+4)-5(6x2+6x)
-9(x2+3)-9(x2+5)
-(x2y-6xy-5)-3(x2y-6xy-3)
14
(—x2-24x+11y)+(—x2+18x-18y)
33
11
-—(6k3-9k2+5)+—(6k3-2k2-6k)
23
(k2+5k)-(8k2+4k-6)
(9a2-5a+5b)-(2a2+4a-2b)
5x2+(2x2-x-7)+(x-4)
5y2-(7x2+y)+(4x2+8y2)
5
(8x2+8xy-—x)-(2x2-7xy-6x)
6
77
(—xy-7y2-6)+(x2+—xy-7y2-7)
66
13
(xy-—y+—)-(xy+x-8)
54
(5y-7x+4z2)+(6y-x-8z2)
(9m2-6m+7)-(m-2n+2)
(6x2+7x+7)+3(4x2+3x)
-8(x2-3)+9(x2-7)
-(x2y+3xy-5)-6(x2y+3xy-6)
14
(—x2+27x+18y)-(—x2-11x+14y)
55
11
-—(4k3-4k2-5)+—(4k3+4k2-1k)
63
(5k2+4k)+(4k2-4k+7)
(6a2+7a-9b)-(2a2-a-5b)
4x2+(x2+5x-4)+(6x+3)
7y2+(9x2-y)+(2x2-7y2)
8
(x2-5xy+—x)+(7x2-8xy-x)
7
41
(—xy-6y2-9)-(x2-—xy+6y2+6)
38
62
(xy-—y+—)+(xy-x+4)
73
(2y+7x-6z2)+(8y-9x+8z2)
(9m2+4m+9)-(2m+n+6)
(4x2-8x-3)-5(x2-3x)
-4(x2+9)-8(x2-3)
-(x2y-3xy-7)-8(x2y-2xy-7)
71
(—x2-20x+15y)-(—x2-15x+22y)
88
11
-—(5k3+5k2+9)+—(3k3-3k2-3k)
43
(7k2-6k)-(k2+k+1)
(a2-7a+2b)-(2a2+2a-4b)
2x2+(4x2-7x+2)-(2x+8)
8y2-(x2-y)+(5x2+6y2)
9
(5x2-5xy+—x)+(9x2-3xy-x)
8
46
(—xy+7y2+4)+(x2-—xy+2y2+7)
57
51
(xy-—y-—)-(xy-x+7)
66
(5y+2x+2z2)+(6y+6x-z2)
(9m2-5m-5)+(5m+4n+6)
(6x2-8x+3)+7(2x2+6x)
-3(x2-2)+6(x2+9)
-(x2y+8xy+9)+2(x2y-3xy-5)
11
(—x2+16x-18y)+(—x2+13x-27y)
88
11
-—(4k3+9k2-5)-—(3k3+5k2-6k)
66
(7k2-7k)-(7k2+6k+6)
(6a2+8a-2b)+(4a2-5a+5b)
4x2-(8x2+x-9)-(7x-8)
5y2+(5x2+y)+(3x2-7y2)
1
(3x2+7xy+—x)+(6x2-xy-8x)
3
69
(—xy+y2+9)+(x2+—xy-8y2-4)
78
46
(xy-—y+—)+(xy+x-7)
35
(3y-6x+9z2)+(2y-5x-5z2)
(7m2+8m+5)-(m-7n+6)
(4x2+2x-6)+9(8x2-4x)
-3(x2+3)+9(x2-2)
-(x2y-8xy+5)-3(x2y-4xy-5)
77
(—x2+13x+16y)-(—x2-20x+12y)
88
11
-—(6k3+4k2+3)-—(2k3-7k2+9k)
62
(7k2-k)+(9k2+k+4)
(a2-7a-9b)-(8a2+3a+2b)
7x2-(9x2+9x+5)+(9x+8)
2y2+(3x2+y)+(x2-4y2)
1
(8x2-6xy+—x)+(2x2+4xy-2x)
8