七年级数学下册整式的加减法练习题精选强烈推荐 47.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47
(2a2-2a-5b)+(a2+7a-9b)
9x2+(9x2-6x-9)-(6x-3)
4y2-(4x2-y)+(8x2+3y2)
1
(8x2-6xy+—x)+(4x2+9xy+5x)
3
16
(—xy+3y2-1)+(x2+—xy-2y2+3)
65
81
(xy-—y-—)-(xy+x-8)
76
(8y-x-7z2)+(6y+6x-4z2)
(4m2-8m+8)-(3m-6n+7)
(2x2+5x-4)-8(9x2+8x)
-7(x2-1)-4(x2-3)
-(x2y+7xy+4)+3(x2y-2xy-2)
33
(—x2+10x-18y)-(—x2-16x-12y)
44
11
-—(9k3-4k2-1)-—(6k3-8k2+8k)
63
(4k2-8k)+(3k2-2k-6)
(6a2-2a+b)-(a2-9a+9b)
9x2+(3x2+8x+6)-(3x-7)
y2-(4x2-y)-(5x2-7y2)
1
(5x2+4xy-—x)+(5x2-6xy-x)
6
11
(—xy+9y2-5)-(x2+—xy-5y2+1)
84
71
(xy-—y+—)+(xy-x+3)
68
(6y+2x+4z2)+(6y-8x+4z2)
(2m2+8m+3)-(9m-9n+8)
(4x2-7x-4)-7(x2-x)
-5(x2-9)+4(x2-1)
-(x2y+3xy-2)+8(x2y-9xy-2)
97
(—x2-27x-18y)-(—x2+17x-20y)
88
11
-—(k3+2k2+9)+—(7k3+2k2+7k)
22
(5k2-5k)-(9k2+4k-5)
(9a2-a-6b)+(7a2-9a-5b)
2x2-(4x2+6x+6)-(6x+2)
2y2-(9x2+y)-(4x2+5y2)
5
(5x2+7xy-—x)+(8x2+4xy+2x)
6
79
(—xy-9y2+5)-(x2+—xy+7y2+5)
68
51
(xy+—y+—)+(xy-x+1)
43
(5y+4x+9z2)-(9y-5x-7z2)
(2m2-4m+7)+(4m+5n-4)
(6x2-2x-2)+3(6x2-9x)
-4(x2-7)-5(x2+3)
-(x2y-4xy+4)+5(x2y-7xy-7)
81
(—x2-11x+12y)+(—x2+18x-20y)
77
11
-—(7k3-6k2-9)+—(8k3+8k2-3k)
42
(8k2-6k)-(9k2+2k-2)
(3a2+9a-2b)-(5a2-9a+5b)
6x2+(2x2+3x-9)-(x-4)
5y2+(4x2-y)-(4x2-y2)