初一数学下册计算题天天练 45.docx
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初一数学下册计算题天天练 45.docx
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初一数学下册计算题天天练45
78
(—xy+5y2+2)-(x2-—xy-6y2+2)
87
95
(xy-—y-—)-(xy+x+2)
86
(4y-3x+7z2)+(3y-4x+6z2)
(6m2-2m-3)-(2m-8n-2)
(8x2-8x-4)+4(9x2-4x)
-8(x2+8)-6(x2+2)
-(x2y-3xy+9)+3(x2y+5xy-5)
18
(—x2+13x+20y)+(—x2-17x-11y)
77
11
-—(4k3+k2-1)-—(k3+5k2-9k)
42
(k2+3k)+(k2+k+4)
(a2+a-2b)+(a2-3a+5b)
3x2-(9x2+x-2)-(5x-4)
y2-(8x2+y)+(x2-2y2)
5
(2x2+6xy-—x)-(8x2+9xy+6x)
4
11
(—xy+7y2+9)-(x2+—xy+5y2+7)
63
17
(xy+—y+—)+(xy-x-1)
88
(4y+9x+3z2)+(y+4x-8z2)
(m2-4m-1)+(2m+2n-4)
(7x2-6x-6)-2(2x2+9x)
-5(x2+4)+8(x2+8)
-(x2y-3xy-9)+5(x2y-8xy-6)
46
(—x2-25x-13y)-(—x2+16x-21y)
55
11
-—(7k3+7k2-7)+—(3k3+9k2+9k)
42
(k2+3k)-(8k2-k-6)
(9a2+a+5b)+(6a2-6a+b)
2x2-(8x2+7x-9)+(6x-3)
3y2+(8x2+y)+(6x2-5y2)
3
(2x2-3xy-—x)-(5x2-2xy-9x)
4
91
(—xy-2y2-8)+(x2-—xy+7y2+7)
83
17
(xy-—y-—)-(xy+x-7)
38
(7y-2x+3z2)+(3y+3x-z2)
(5m2+6m+3)+(9m-6n-8)
(3x2+6x-3)+3(5x2+5x)
-3(x2+9)-5(x2+6)
-(x2y-4xy-2)-9(x2y+6xy-5)
75
(—x2-26x-16y)-(—x2-17x-15y)
66
11
-—(6k3+k2+2)+—(k3+7k2-5k)
65
(5k2-5k)+(3k2-8k-3)
(7a2-2a-5b)-(7a2+9a+6b)
3x2-(3x2+x+9)-(6x+9)
y2+(8x2-y)-(5x2+4y2)
9
(6x2+4xy+—x)+(5x2+8xy+9x)
8
41
(—xy-6y2+1)-(x2+—xy-9y2-1)
35
76
(xy-—y+—)-(xy-x+4)
87
(6y+9x-3z2)-(y-7x-6z2)
(8m2+4m+6)-(2m+n+9)
(6x2-8x+4)+4(7x2-5x)
-8(x2-1)-6(x2-8)
-(x2y+4xy-7)+9(x2y+5xy-6)
33
(—x2-21x-10y)+(—x2-11x-22y)
44
11
-—(5k3-5k2-4)-—(8k3-k2-9k)
43
(5k2+3k)-(4k2-3k+6)
(a2-a-6b)+(3a2-4a-9b)
x2+(7x2-6x-8)-(4x+8)
6y2-(6x2+y)+(9x2+8y2)
7
(8x2-3xy+—x)+(2x2-5xy-2x)
6
66
(—xy+2y2-5)+(x2+—xy-6y2-5)
77
64
(xy-—y+—)-(xy-x-8)
55
(9y-7x-4z2)+(4y+8x+8z2)
(4m2-2m+2)-(7m-4n+7)
(5x2-7x-8)-3(3x2+3x)
-9(x2-5)-7(x2-1)
-(x2y+5xy+7)+5(x2y-7xy+6)
41
(—x2+24x+12y)+(—x2-14x+15y)
55
11
-—(3k3-4k2+5)-—(6k3+7k2+6k)
65
(8k2+4k)-(9k2-2k-8)
(5a2+6a+5b)+(7a2-3a-9b)
3x2+(7x2-9x-8)+(x-7)
6y2+(3x2-y)-(2x2-7y2)
8
(8x2+5xy+—x)+(6x2-7xy-4x)
7
65
(—xy-9y2+5)-(x2-—xy+3y2-5)
74
81
(xy-—y+—)+(xy+x+5)
77
(9y-3x-7z2)+(5y+3x-7z2)
(8m2-5m+7)+(2m-4n-9)
(8x2-4x-2)-3(6x2+8x)
-9(x2-8)-8(x2+6)
-(x2y+6xy+4)+5(x2y-9xy-4)
41
(—x2-28x+14y)+(—x2+12x-20y)
33
11
-—(9k3+8k2+6)+—(6k3+9k2+5k)
24
(3k2+5k)-(3k2+k+9)
(3a2-4a+8b)-(6a2-8a+8b)
3x2-(5x2+8x+9)-(7x-8)
3y2-(2x2-y)-(2x2-4y2)
3
(3x2-5xy+—x)-(4x2+9xy+x)
4
55
(—xy-5y2+8)-(x2+—xy-y2+9)
66
41
(xy+—y-—)-(xy-x-6)
54
(9y-4x+6z2)+(4y+2x-z2)
(m2-9m+4)+(3m-7n-1)
(9x2+8x-6)+6(x2+3x)
-2(x2-4)+9(x2-1)
-(x2y-5xy+7)+7(x2y+6xy-2)
55
(—x2+27x+13y)-(—x2+16x+15y)
44
11
-—(5k3-8k2+4)+—(6k3-3k2+2k)
24
(4k2+9k)+(7k2+3k-5)
(2a2-6a+4b)+(a2-5a-b)
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