七年级数学下册整式的加减法练习题精选强烈推荐 68.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68
(8m2+6m+6)-(7m+n-9)
(5x2-9x-8)-4(7x2+6x)
-9(x2+9)-2(x2+6)
-(x2y+2xy+7)-8(x2y-9xy-8)
61
(—x2-18x+20y)-(—x2-20x+16y)
77
11
-—(4k3-6k2-6)-—(5k3+9k2-9k)
62
(7k2+5k)-(2k2+8k+2)
(2a2-5a-8b)+(2a2-9a+2b)
5x2+(5x2-x-8)+(x-7)
y2-(x2+y)+(8x2+6y2)
1
(9x2+6xy-—x)-(5x2-8xy-7x)
4
76
(—xy+7y2-2)+(x2+—xy+8y2-3)
67
41
(xy+—y-—)-(xy+x-7)
33
(7y+3x-3z2)-(2y+7x-6z2)
(2m2-8m+6)-(7m+4n+1)
(7x2-7x+5)-4(6x2+3x)
-2(x2-8)+4(x2-4)
-(x2y+6xy+8)+8(x2y+7xy+6)
61
(—x2-19x+12y)+(—x2-14x-26y)
77
11
-—(k3+5k2-1)-—(6k3+7k2+8k)
26
(4k2+7k)-(2k2+2k+9)
(6a2-5a+6b)+(2a2-4a-4b)
8x2+(6x2+4x+8)-(x-7)
3y2+(8x2-y)-(5x2+6y2)
1
(3x2-8xy+—x)-(9x2-8xy+x)
4
16
(—xy-8y2-7)-(x2+—xy+9y2-2)
65
71
(xy+—y+—)+(xy-x-9)
85
(8y+8x+5z2)+(8y-2x-4z2)
(8m2-6m-6)-(7m+3n+3)
(x2+4x+7)+8(5x2-x)
-9(x2+4)-2(x2-6)
-(x2y+3xy-4)-4(x2y-5xy+9)
11
(—x2-23x+18y)+(—x2-10x-28y)
55
11
-—(3k3-9k2+2)-—(4k3-4k2+6k)
63
(6k2-2k)+(9k2+8k+8)
(2a2+2a-6b)-(8a2+7a+8b)
2x2+(8x2-8x-5)+(x+7)
9y2-(2x2-y)+(4x2+3y2)
1
(6x2-6xy-—x)-(7x2-3xy+9x)
5
91
(—xy+5y2+9)+(x2-—xy+2y2+8)
83
77
(xy-—y-—)+(xy+x-2)
68
(3y+x-7z2)+(8y-4x-3z2)
(9m2+4m+7)-(7m+4n-4)
(4x2-x-2)+4(x2-3x)
-3(x2+1)+7(x2-4)