七年级数学下册整式的加减法练习题精选强烈推荐 387.docx
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七年级数学下册整式的加减法练习题精选强烈推荐387
11
-—(2k3+5k2+4)+—(7k3-4k2+6k)
66
(9k2+2k)+(7k2+8k-4)
(3a2+5a-3b)+(9a2-7a-8b)
2x2-(4x2+5x+8)-(8x-8)
7y2+(x2+y)+(2x2-8y2)
8
(3x2-7xy+—x)-(3x2-8xy-x)
7
11
(—xy+6y2+2)+(x2+—xy-8y2+5)
34
31
(xy-—y-—)+(xy+x+7)
47
(6y-4x-9z2)+(9y-3x-5z2)
(9m2+6m+4)+(7m+2n+1)
(8x2-8x-7)-5(6x2+2x)
-5(x2+4)+7(x2+1)
-(x2y+5xy+3)-8(x2y+9xy+5)
33
(—x2+17x-12y)-(—x2-19x+17y)
44
11
-—(9k3+3k2+7)+—(9k3+4k2-4k)
65
(9k2-8k)+(6k2-5k+9)
(a2-5a+7b)-(6a2+5a-7b)
5x2+(2x2-5x-5)-(9x-2)
6y2+(7x2+y)-(4x2+5y2)
1
(9x2+4xy-—x)-(5x2-5xy-7x)
5
81
(—xy+y2-7)-(x2+—xy-5y2-5)
73
14
(xy+—y-—)-(xy+x+2)
65
(9y-4x+z2)-(3y-7x+5z2)
(3m2-2m+4)-(7m-n-7)
(2x2-9x-1)-6(7x2-5x)
-4(x2+9)+8(x2+1)
-(x2y+7xy-8)-3(x2y-6xy+4)
35
(—x2-14x-14y)+(—x2+11x+20y)
44
11
-—(4k3-4k2-3)-—(5k3+3k2+3k)
43
(4k2-2k)-(9k2-4k-7)
(8a2+2a+8b)-(3a2-8a-6b)
6x2+(6x2-5x-7)+(x+4)
6y2-(x2+y)+(5x2+8y2)
4
(4x2+9xy+—x)-(x2+4xy+x)
3
16
(—xy+y2-9)+(x2+—xy+6y2+1)
35
12
(xy+—y+—)-(xy-x+7)
83
(2y+9x+8z2)-(6y-4x+4z2)
(8m2+2m-3)+(2m-7n+5)
(9x2-2x-4)+7(5x2+x)
-9(x2+4)+8(x2+9)
-(x2y-8xy+6)-7(x2y-9xy+9)
71
(—x2-11x+17y)-(—x2+15x+30y)
88
11
-—(4k3-7k2+8)-—(2k3+2k2+1k)
24
(7k2+3k)-(4k2-3k+7)
(7a2-9a+4b)-(2a2-2a+7b)