初一数学下册计算题天天练 16.docx
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初一数学下册计算题天天练16
(8m2-5m-6)+(6m+9n+8)
(5x2+5x+5)+6(5x2+9x)
-5(x2+5)-8(x2+1)
-(x2y-7xy-8)-4(x2y+6xy+5)
16
(—x2+29x-19y)+(—x2+10x-21y)
77
11
-—(4k3-7k2+1)+—(k3-7k2-2k)
25
(4k2-3k)-(8k2+8k-9)
(7a2+5a-4b)-(8a2+8a-3b)
5x2-(8x2+2x+8)-(9x-5)
4y2-(2x2+y)-(7x2+2y2)
1
(8x2+3xy-—x)-(2x2+9xy+6x)
8
61
(—xy+8y2-7)-(x2-—xy-6y2-7)
75
11
(xy-—y+—)+(xy+x-2)
57
(2y+x+4z2)+(9y-x-7z2)
(5m2-7m+1)-(m-3n+1)
(9x2+x+9)+8(2x2-7x)
-7(x2+6)-8(x2-2)
-(x2y-8xy-4)-9(x2y+4xy-3)
44
(—x2-23x+16y)-(—x2-19x+20y)
33
11
-—(5k3+6k2+9)+—(3k3-4k2+7k)
62
(k2+6k)-(6k2-9k+7)
(7a2+2a+9b)+(a2-a-b)
6x2-(9x2-9x+8)-(7x+8)
4y2+(5x2-y)+(4x2-8y2)
1
(6x2-5xy+—x)+(4x2+xy+7x)
3
47
(—xy+8y2-9)+(x2-—xy+2y2-4)
56
18
(xy+—y+—)+(xy-x-7)
47
(y-6x-9z2)-(6y-5x-7z2)
(7m2-9m-2)-(9m+4n-6)
(7x2-3x+8)-3(2x2+x)
-2(x2+9)-4(x2-3)
-(x2y-7xy-4)+4(x2y+5xy+3)
33
(—x2+11x+13y)+(—x2-10x+15y)
44
11
-—(6k3+3k2-4)-—(3k3+7k2+4k)
24
(4k2+5k)-(8k2-9k+6)
(5a2+8a+8b)-(9a2+7a+b)
5x2+(3x2-2x-6)+(8x-7)
8y2+(7x2+y)+(6x2-2y2)
7
(6x2-4xy+—x)+(6x2+3xy-7x)
6
65
(—xy-8y2-1)-(x2-—xy+8y2+1)
76
11
(xy+—y+—)-(xy+x-6)
45
(3y+3x-7z2)-(8y+5x-6z2)
(8m2+9m-5)+(6m-2n+8)
(8x2-x-6)-6(6x2+2x)
-8(x2-6)-7(x2+1)
-(x2y-8xy-2)-7(x2y+8xy-8)
16
(—x2-26x+20y)+(—x2+13x+21y)
55
11
-—(3k3-4k2-5)-—(2k3+8k2-5k)
22
(k2-7k)+(4k2-2k+4)
(7a2+2a-b)-(2a2-6a-2b)
5x2+(7x2+x-6)+(5x+9)
y2-(5x2+y)-(x2+4y2)
1
(3x2-9xy-—x)-(x2+7xy+5x)
6
39
(—xy+y2-8)+(x2+—xy-4y2-1)
48
54
(xy+—y+—)-(xy-x+3)
63
(7y-3x+5z2)-(2y+3x-5z2)
(m2-6m+2)-(m+8n+1)
(2x2-2x-5)-3(4x2+3x)
-5(x2-3)+4(x2+8)
-(x2y-6xy+2)+6(x2y-9xy+9)
88
(—x2-23x+11y)-(—x2+11x+23y)
77
11
-—(9k3-3k2+3)-—(9k3+6k2+3k)
23
(k2+7k)-(5k2+k-2)
(5a2-2a-8b)+(2a2-2a+4b)
5x2-(6x2-7x-4)-(x-7)
5y2-(x2+y)-(2x2+5y2)
4
(x2+2xy+—x)-(3x2-7xy-2x)
5
12
(—xy+3y2-7)-(x2-—xy-9y2-7)
43
54
(xy+—y-—)-(xy-x+4)
45
(9y-x+8z2)-(5y-7x-9z2)
(5m2+8m+3)+(4m-5n+5)
(x2+4x+4)-2(8x2+8x)
-5(x2+4)+8(x2+7)
-(x2y+8xy-4)+7(x2y-5xy-3)
22
(—x2-14x-17y)-(—x2-14x+28y)
33
11
-—(9k3+6k2+2)-—(6k3+8k2-9k)
22
(2k2-k)+(8k2-7k+7)
(2a2-6a+b)+(8a2-9a+4b)
3x2+(x2+7x+4)+(6x+8)
y2-(4x2+y)-(7x2+9y2)
4
(5x2+9xy-—x)-(9x2+9xy-6x)
3
57
(—xy+7y2-2)-(x2-—xy-9y2-1)
48
11
(xy+—y-—)-(xy-x-5)
57
(3y-4x-7z2)+(4y-2x+3z2)
(9m2+2m+6)+(m-2n-7)
(8x2+9x+1)-8(7x2-2x)
-6(x2+3)+3(x2+5)
-(x2y-7xy+8)-3(x2y+9xy-7)
81
(—x2+18x+16y)+(—x2-10x-16y)
77
11
-—(6k3-8k2+3)-—(7k3+4k2+2k)
62
(5k2+7k)-(8k2+5k+2)
(a2-4a+2b)+(3a2+3a-7b)
3x2-(8x2+4x-3)+(6x+5)
9y2-(6x2-y)+(9x2+9y2)
7
(4x2+xy+—x)-(4x2-9xy+7x)
8