初一数学下册计算题天天练 11.docx
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初一数学下册计算题天天练11
(2x2-3x-7)+4(x2-3x)
-4(x2+2)+5(x2+7)
-(x2y-7xy-3)+7(x2y+2xy-3)
15
(—x2+13x+20y)+(—x2+20x-14y)
44
11
-—(6k3-2k2-4)-—(6k3-4k2+2k)
66
(4k2-5k)+(6k2+5k-4)
(9a2+a-4b)+(a2-6a-7b)
3x2+(4x2+9x+1)-(4x-2)
8y2+(5x2-y)-(4x2+2y2)
7
(3x2+6xy+—x)-(8x2-xy+3x)
6
16
(—xy-6y2-9)-(x2+—xy-9y2+5)
55
13
(xy+—y-—)-(xy+x+4)
84
(4y-2x-9z2)+(9y+3x+z2)
(m2-7m+6)+(8m+6n-6)
(6x2-8x+7)+6(2x2-6x)
-8(x2-2)+3(x2-2)
-(x2y+9xy+8)-8(x2y-6xy+3)
11
(—x2+11x-10y)+(—x2-11x-22y)
55
11
-—(9k3-6k2-7)+—(6k3-8k2+4k)
43
(4k2-k)+(4k2+k-7)
(4a2-4a+4b)+(a2+4a-b)
x2+(7x2+6x+1)-(2x-2)
9y2+(7x2+y)-(7x2+9y2)
7
(8x2-8xy-—x)-(9x2+7xy+6x)
6
31
(—xy-5y2+9)-(x2+—xy-9y2+1)
45
28
(xy-—y+—)+(xy+x-2)
37
(2y-6x-8z2)+(4y-7x-9z2)
(8m2+9m+1)+(6m-6n-9)
(8x2-5x+6)-2(8x2+5x)
-8(x2-6)-7(x2-4)
-(x2y+4xy+5)+2(x2y+5xy+4)
22
(—x2-10x+12y)-(—x2-15x+17y)
33
11
-—(3k3-k2+9)+—(3k3+7k2-2k)
44
(8k2+3k)+(4k2-9k+1)
(2a2-4a-2b)+(a2+2a-8b)
8x2-(2x2-x+5)+(8x-9)
8y2+(x2-y)-(x2-6y2)
1
(2x2-9xy+—x)+(2x2+9xy-3x)
3
44
(—xy-5y2+2)+(x2-—xy-7y2+3)
53
11
(xy-—y+—)-(xy+x-1)
57
(6y-9x+7z2)+(9y-2x+2z2)
(m2-m-6)+(2m-4n+1)
(5x2-2x-7)+3(8x2+7x)
-3(x2+8)+8(x2+4)
-(x2y+5xy-5)+2(x2y-8xy+6)
11
(—x2-22x+10y)+(—x2-16x-16y)
66
11
-—(k3+7k2-2)-—(6k3+2k2-1k)
63
(8k2+6k)-(k2+5k-2)
(7a2-4a-b)+(7a2-6a-7b)
3x2-(5x2+2x-5)-(5x+8)
4y2-(2x2-y)-(4x2-7y2)
1
(4x2+3xy-—x)-(9x2-xy-8x)
6
97
(—xy+6y2+7)+(x2-—xy+2y2-4)
88
19
(xy+—y+—)+(xy+x-4)
38
(5y-9x+8z2)+(2y+x-z2)
(4m2+6m-8)-(2m+6n+7)
(6x2-2x-9)-3(3x2-3x)
-8(x2-4)+4(x2+3)
-(x2y-2xy-6)-2(x2y-2xy-3)
53
(—x2+22x-11y)+(—x2+16x+13y)
44
11
-—(4k3-2k2-2)+—(5k3-9k2+4k)
26
(9k2-3k)+(6k2-4k+3)
(5a2+a+8b)+(8a2+9a+3b)
8x2-(5x2+x+6)-(x+7)
8y2-(3x2+y)-(3x2+4y2)
1
(8x2+5xy+—x)-(2x2+3xy+7x)
5
87
(—xy-y2-4)+(x2+—xy+6y2-2)
76
61
(xy-—y-—)+(xy-x+6)
77
(4y+6x-8z2)+(7y-x-z2)
(7m2+m+2)-(3m-4n+4)
(5x2-7x+5)+4(9x2-5x)
-7(x2-2)+9(x2-2)
-(x2y-7xy-9)+8(x2y-6xy-2)
17
(—x2+13x+14y)+(—x2+17x-23y)
88
11
-—(5k3-7k2-9)+—(2k3-2k2+9k)
26
(8k2+4k)+(7k2+9k+3)
(7a2-3a+5b)+(6a2+4a-7b)
4x2+(x2-6x-4)-(5x+2)
y2+(7x2-y)+(6x2-6y2)
4
(4x2+9xy+—x)+(5x2-2xy-7x)
3
41
(—xy+2y2+8)+(x2+—xy-5y2-5)
58
27
(xy+—y+—)-(xy+x+2)
36
(8y+4x+3z2)-(4y-5x-3z2)
(3m2-2m-4)-(5m-n+8)
(x2-3x+9)+7(3x2-6x)
-2(x2-8)+5(x2-3)
-(x2y-5xy+7)+8(x2y+5xy+3)
22
(—x2-17x+19y)-(—x2+10x+23y)
33
11
-—(8k3-4k2-2)-—(7k3+6k2+3k)
62
(5k2-k)-(7k2-5k-5)
(a2+2a+b)+(6a2+8a-6b)
x2-(7x2-6x-1)+(8x-1)
2y2-(x2+y)+(8x2-8y2)
4
(4x2-5xy+—x)+(x2-9xy+9x)
5
73
(—xy-3y2-6)-(x2-—xy+2y2+3)
84