七年级数学下册整式的加减法计算题 2Word文件下载.docx
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11
(—x2+18x+20y)-(—x2-11x+22y)
55
-—(5k3-6k2-7)+—(4k3-6k2+6k)
23
(9m2-3m+2)+(9m+6n-2)
(6x2-5x+3)+6(x2-6x)
-6(x2-1)+6(x2-5)
-(x2y+9xy-5)+4(x2y+9xy-2)
14
(—x2-20x-15y)-(—x2-13x+18y)
-—(3k3-4k2+7)+—(9k3+9k2-6k)
63
(7m2+2m+4)+(6m+6n-5)
(x2+6x+6)+9(7x2-4x)
-3(x2+9)+3(x2+5)
-(x2y+5xy-8)+8(x2y-4xy-6)
41
(—x2-12x-13y)+(—x2-13x-12y)
33
-—(7k3+2k2+9)+—(k3-9k2-1k)
66
(6m2+6m-3)-(8m+9n+2)
(8x2-7x-9)+7(6x2+x)
-2(x2+7)-2(x2+5)
-(x2y+2xy-9)+5(x2y+6xy-2)
(—x2-26x+13y)+(—x2+18x+30y)
88
-—(3k3-2k2+7)-—(4k3+7k2-3k)
65
(3m2+9m+1)-(3m+n+2)
(7x2-5x-6)-5(5x2+5x)
-4(x2+3)-6(x2-5)
-(x2y+6xy+4)+6(x2y+3xy-4)
57
(—x2-19x+10y)-(—x2+14x+18y)
-—(2k3+9k2+4)-—(8k3-9k2+4k)
(3m2+3m-9)+(m+4n-7)
(9x2-3x+9)-2(5x2+x)
-4(x2-3)+2(x2+5)
-(x2y+6xy-5)-6(x2y+6xy-8)
51
(—x2+18x-20y)+(—x2+16x+12y)
44
-—(2k3+4k2+8)+—(k3-8k2-2k)
24
(3m2-2m-8)-(2m-n+4)
(4x2-5x+9)-7(2x2-2x)
-7(x2+9)+8(x2-7)
-(x2y+5xy+9)+3(x2y-3xy+3)
12
(—x2-16x-18y)-(—x2+11x-19y)
-—(9k3-8k2+6)-—(2k3+4k2-1k)
62
(4m2-8m+9)-(6m+4n-4)
(9x2-x-5)-7(4x2+6x)
-5(x2+4)+9(x2-7)