七年级数学下册整式的加减法练习题精选强烈推荐 288.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288
-3(x2+4)-8(x2-5)
-(x2y-3xy+9)+5(x2y+3xy+7)
11
(—x2-30x+11y)-(—x2-19x-26y)
44
11
-—(8k3-8k2+5)-—(4k3+k2-6k)
46
(3k2+6k)+(4k2+2k-6)
(3a2-3a+b)+(7a2-4a-6b)
6x2+(x2-2x-5)+(9x-9)
7y2+(3x2-y)+(5x2-6y2)
3
(3x2-2xy-—x)+(5x2+2xy-5x)
4
51
(—xy-3y2-8)+(x2-—xy+4y2+3)
66
41
(xy+—y+—)-(xy+x+7)
38
(9y-3x+7z2)-(8y-5x+7z2)
(7m2-9m-9)+(m-9n+1)
(x2+4x+6)+8(8x2-x)
-8(x2-9)-6(x2-7)
-(x2y-3xy+9)-2(x2y+6xy-7)
71
(—x2+26x-14y)+(—x2+11x-27y)
66
11
-—(8k3+9k2+4)+—(5k3-7k2+2k)
63
(5k2-7k)+(5k2+2k-7)
(3a2-5a+7b)+(8a2+6a-b)
8x2-(x2+x+5)+(9x-2)
2y2-(9x2-y)+(x2+y2)
1
(7x2+3xy-—x)-(7x2+6xy-8x)
3
54
(—xy+5y2+3)+(x2+—xy-y2-6)
43
26
(xy-—y+—)+(xy-x+3)
37
(5y-6x+3z2)-(4y-3x+6z2)
(7m2-9m+1)+(2m-2n-9)
(2x2+7x+5)+9(x2-9x)
-4(x2-4)+6(x2-4)
-(x2y-2xy+5)-5(x2y+7xy-3)
61
(—x2+18x+13y)+(—x2-12x-22y)
55
11
-—(3k3-9k2+1)-—(9k3-3k2+3k)
23
(k2-6k)+(8k2+6k+4)
(a2-3a-4b)-(5a2-2a-7b)
6x2-(5x2+8x-4)+(5x-5)
8y2+(8x2-y)+(x2+9y2)
6
(9x2-7xy-—x)-(5x2+xy-3x)
5
11
(—xy-8y2-1)+(x2-—xy+3y2-9)
54
11
(xy+—y-—)+(xy-x+9)
44
(4y-2x+9z2)-(2y+5x+z2)
(2m2-9m-2)-(2m+8n-9)
(7x2-6x-3)-2(4x2+6x)
-7(x2-4)-8(x2-3)
-(x2y+6xy+9)-2(x2y+2xy+3)
24
(—x2-22x-17y)-(—x2-18x+22y)
33