七年级数学下册整式的加减法计算题 307Word格式.docx
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11
-—(3k3-6k2+4)-—(6k3+3k2-1k)
25
(m2-8m+2)+(2m+n+7)
(9x2-9x-4)+4(9x2+3x)
-5(x2+1)+8(x2-9)
-(x2y+3xy-9)-8(x2y-2xy-5)
75
(—x2+11x+12y)+(—x2+10x-25y)
66
-—(8k3+9k2-4)-—(9k3-3k2+1k)
(8m2-2m+5)-(9m-4n-1)
(8x2+3x-6)-7(9x2-7x)
-4(x2+8)+8(x2-7)
-(x2y+8xy+3)-8(x2y+8xy-6)
(—x2+19x-14y)+(—x2+14x+30y)
33
-—(7k3-4k2-8)-—(k3+4k2+6k)
(5m2+m+1)-(5m+2n-8)
(9x2-6x+1)+2(2x2+6x)
-3(x2-9)-9(x2+3)
-(x2y+5xy+2)+5(x2y+3xy-2)
71
(—x2-16x-17y)+(—x2-12x-10y)
-—(9k3+5k2+7)+—(4k3-5k2-6k)
23
(m2-3m+9)+(4m+2n+9)
(2x2+2x-4)+4(7x2-3x)
-4(x2+2)-5(x2+1)
-(x2y-8xy-2)-8(x2y-5xy+3)
64
(—x2-11x-17y)-(—x2+14x-16y)
55
-—(3k3+8k2+2)+—(8k3+8k2-8k)
(7m2+8m+7)-(4m-n+7)
(2x2+8x+1)+7(7x2+9x)
-5(x2+6)-3(x2+5)
-(x2y-6xy-5)-5(x2y+2xy-3)
16
(—x2+28x+15y)-(—x2+14x-14y)
77
-—(3k3+k2+5)+—(8k3+k2+2k)
43
(4m2+3m-6)+(m+8n-3)
(9x2-5x+5)+4(5x2-3x)
-2(x2+6)+4(x2-8)
-(x2y+4xy-8)+8(x2y+5xy-7)
21
(—x2-16x+18y)+(—x2-18x+27y)
-—(2k3-4k2-1)+—(4k3-3k2-7k)
(4m2-9m-9)+(8m-6n+6)
(2x2+7x-1)-8(3x2+4x)
-5(x2-3)-4(x2-2)
-(x2y+9xy+9)+3(x2y+8xy+4)
24
(—x2-12x-17y)+(—x2+18x-19y)
-—(7k3+5k2+6)-—(5k3-7k2-2k)