初一数学下册计算题天天练 13.docx
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初一数学下册计算题天天练13
6y2+(9x2+y)-(x2-7y2)
6
(6x2+8xy-—x)+(4x2-3xy-9x)
5
91
(—xy+2y2+8)-(x2-—xy-9y2-1)
85
65
(xy+—y-—)+(xy-x+5)
56
(7y-8x-z2)-(8y+4x+4z2)
(7m2-6m-1)-(7m+3n+2)
(8x2-6x+7)-2(2x2+2x)
-9(x2-2)+3(x2+6)
-(x2y-9xy+5)-7(x2y-3xy+3)
61
(—x2+27x-18y)-(—x2+16x-19y)
55
11
-—(5k3-8k2-8)-—(6k3+9k2+4k)
63
(3k2+8k)+(7k2-6k-9)
(5a2+3a-7b)-(a2+5a+b)
7x2-(2x2-8x-1)-(7x+9)
8y2+(5x2+y)+(7x2+4y2)
1
(5x2+xy-—x)+(3x2-5xy-x)
3
48
(—xy-8y2-6)+(x2-—xy+7y2-2)
57
11
(xy-—y+—)+(xy+x+2)
67
(5y+7x+3z2)+(2y-x-9z2)
(4m2-5m-2)+(8m+9n+9)
(8x2+3x+6)+5(6x2-5x)
-7(x2+7)+8(x2+8)
-(x2y+8xy+7)-6(x2y-8xy+7)
77
(—x2+28x-13y)+(—x2-13x+14y)
88
11
-—(5k3-8k2+1)-—(k3+5k2+6k)
24
(6k2+3k)+(9k2-7k-3)
(5a2+6a+2b)+(6a2+6a-2b)
4x2+(5x2-9x-9)-(3x-7)
5y2-(x2+y)+(3x2-y2)
2
(9x2-3xy-—x)-(8x2-2xy+x)
3
54
(—xy-2y2-7)+(x2-—xy-8y2-5)
65
16
(xy-—y+—)-(xy+x+4)
45
(2y+4x-6z2)+(4y+9x-z2)
(6m2+5m+5)+(4m-5n-7)
(8x2+3x-9)+8(9x2-8x)
-2(x2+4)-9(x2+4)
-(x2y-8xy+6)+4(x2y-7xy-5)
61
(—x2+26x-10y)-(—x2+20x+10y)
55
11
-—(6k3-k2+3)+—(k3+8k2-2k)
25
(3k2-4k)+(2k2+5k+2)
(a2+3a+b)+(8a2+8a-6b)
8x2+(5x2-2x-2)+(9x-7)
7y2+(4x2-y)-(9x2+6y2)
8
(4x2-8xy+—x)+(7x2-7xy-9x)
7
16
(—xy+7y2+1)-(x2+—xy-2y2+7)
35
14
(xy+—y-—)-(xy+x-3)
63
(9y+6x-z2)-(9y+5x+4z2)
(3m2+5m+5)+(m+9n+5)
(4x2+4x-8)+9(6x2-8x)
-7(x2+1)+2(x2-3)
-(x2y+7xy-6)+8(x2y+3xy-5)
71
(—x2+27x+17y)-(—x2-12x+29y)
88
11
-—(4k3+4k2-2)-—(k3+k2+4k)
62
(6k2-2k)-(2k2-4k+5)
(5a2-a-b)+(2a2-8a+8b)
7x2+(3x2-6x+1)-(5x-7)
8y2-(9x2-y)-(7x2-3y2)
8
(4x2+7xy+—x)-(4x2-5xy+5x)
7
11
(—xy+7y2+8)+(x2-—xy+4y2+6)
56
91
(xy+—y+—)+(xy+x+4)
86
(2y+9x+5z2)+(7y-7x-z2)
(6m2+8m-4)+(9m+9n-2)
(6x2+x-1)+4(x2-4x)
-4(x2-6)-3(x2+2)
-(x2y-4xy+3)+4(x2y-2xy+6)
31
(—x2-30x-11y)-(—x2+12x-10y)
44
11
-—(7k3-2k2-5)+—(9k3-2k2+1k)
44
(2k2-9k)-(k2-7k-7)
(2a2-8a-7b)+(2a2-a+9b)
4x2-(2x2+4x-5)+(3x+8)
6y2-(5x2-y)-(9x2-4y2)
4
(5x2-2xy+—x)-(3x2-2xy+6x)
5
59
(—xy+3y2+5)+(x2-—xy-6y2+9)
48
93
(xy+—y-—)-(xy-x-8)
84
(5y+6x-4z2)-(4y-4x+2z2)
(5m2+m+3)+(8m-n+7)
(x2+8x+6)-7(2x2-5x)
-8(x2-6)+8(x2-4)
-(x2y+7xy+6)-4(x2y-2xy-9)
66
(—x2+16x+14y)+(—x2-11x-24y)
55
11
-—(7k3+7k2-2)+—(8k3-4k2-2k)
44
(2k2-7k)+(5k2-5k-1)
(2a2-6a-4b)-(7a2+2a+9b)
8x2+(3x2+5x+1)+(2x+6)
4y2-(4x2-y)+(9x2-4y2)
2
(8x2-6xy+—x)+(9x2+5xy+6x)
3
12
(—xy-4y2-9)+(x2+—xy+6y2+7)
83
29
(xy+—y+—)-(xy+x-5)
38
(2y-3x+3z2)-(4y+x-8z2)
(7m2-8m+2)+(7m-9n+8)
(4x2-8x-6)-5(8x2-2x)
-3(x2+9)+2(x2+1)
-(x2y-6xy+3)+5(x2y+2xy+7)
16
(—x2-21x+11y)-(—x2-17x-28y)
55
11
-—(5k3+4k2+4)-—(4k3-7k2+3k)
25