七年级数学下册整式的加减法练习题精选强烈推荐 407.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407
2y2+(5x2+y)+(3x2+8y2)
6
(2x2+8xy-—x)+(8x2-4xy-7x)
5
65
(—xy-9y2+5)-(x2+—xy-4y2+8)
74
51
(xy-—y-—)+(xy+x-8)
65
(7y-9x-8z2)-(6y-5x-2z2)
(3m2-8m+7)-(8m+6n+3)
(8x2+4x-4)+4(4x2-5x)
-9(x2+4)+2(x2-4)
-(x2y+9xy-4)-3(x2y-7xy+7)
16
(—x2+13x-13y)+(—x2-15x-21y)
55
11
-—(9k3+k2-7)-—(9k3+8k2-8k)
26
(5k2+4k)-(7k2-9k-6)
(8a2+7a-3b)+(a2-9a-4b)
2x2-(8x2+8x-8)-(5x-4)
2y2+(x2+y)-(5x2-y2)
2
(4x2-2xy+—x)-(9x2+2xy+2x)
3
17
(—xy+4y2+1)+(x2-—xy+4y2+4)
46
45
(xy+—y+—)+(xy+x+4)
34
(3y+6x+9z2)+(7y-9x+7z2)
(m2-4m-2)+(7m-3n-2)
(7x2+6x-6)+9(5x2+8x)
-9(x2-8)-5(x2+9)
-(x2y-7xy-5)+9(x2y-4xy+7)
15
(—x2-24x-10y)+(—x2-11x+28y)
66
11
-—(8k3-9k2+4)+—(7k3+k2+9k)
44
(6k2-6k)+(9k2-3k-7)
(9a2+8a+7b)-(6a2-4a-5b)
2x2+(9x2+9x-7)-(9x-8)
y2+(9x2+y)-(6x2-y2)
2
(8x2-6xy+—x)+(8x2+6xy-x)
3
41
(—xy+7y2-5)+(x2+—xy+y2+9)
55
13
(xy-—y-—)-(xy+x+5)
44
(6y-8x+3z2)+(6y+4x-2z2)
(4m2-7m-7)+(5m-7n+3)
(7x2-3x+5)-4(9x2+2x)
-9(x2+1)+3(x2+4)
-(x2y-5xy+3)-9(x2y+8xy+9)
44
(—x2+25x+18y)-(—x2+15x+21y)
33
11
-—(2k3-3k2-7)+—(8k3+4k2+6k)
43
(9k2-5k)+(7k2-6k+2)
(5a2-9a+4b)-(8a2+3a+8b)
9x2+(4x2+6x-5)-(3x-9)
9y2-(8x2-y)-(7x2+5y2)
4
(4x2-8xy+—x)-(8x2+xy+3x)
3
75
(—xy-4y2+1)+(x2+—xy-3y2+7)
84