七年级数学下册整式的加减法计算题 460.docx
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七年级数学下册整式的加减法计算题460
(9m2+6m-3)-(8m-6n+2)
(5x2+6x-2)-9(4x2+3x)
-7(x2+2)-8(x2-9)
-(x2y+5xy+7)-4(x2y+5xy+4)
41
(—x2-28x+14y)-(—x2+14x+11y)
33
11
-—(9k3-4k2+1)-—(7k3+5k2-2k)
45
(5m2-9m-4)-(8m+6n-2)
(x2+8x+3)+4(6x2+x)
-8(x2-4)-4(x2+7)
-(x2y-5xy+6)-6(x2y+4xy-4)
61
(—x2+19x+12y)+(—x2+10x+17y)
55
11
-—(9k3+k2+8)+—(3k3+k2-3k)
44
(7m2-7m-1)-(6m-6n+1)
(x2-9x-7)-9(3x2-x)
-9(x2+7)-8(x2+2)
-(x2y-3xy-9)-6(x2y-7xy+2)
55
(—x2-17x-14y)-(—x2+17x-25y)
44
11
-—(k3-5k2+3)-—(k3-7k2+9k)
44
(7m2-3m+5)+(9m-2n-7)
(6x2-9x+2)+5(x2+6x)
-4(x2+1)-8(x2+4)
-(x2y+7xy-7)+3(x2y+7xy-8)
44
(—x2-18x-19y)+(—x2+13x-18y)
33
11
-—(6k3+6k2+1)+—(6k3-7k2+6k)
24
(4m2+2m+3)-(2m-n-9)
(9x2-x+5)+9(4x2-5x)
-7(x2-8)+6(x2-6)
-(x2y+7xy-4)+6(x2y+7xy-9)
41
(—x2-26x-10y)+(—x2+14x-18y)
55
11
-—(2k3-9k2-3)-—(4k3+5k2+7k)
65
(3m2-5m-5)+(7m-n-5)
(5x2+x-3)-9(3x2-6x)
-9(x2-4)+4(x2-7)
-(x2y+4xy+4)+5(x2y-8xy-9)
11
(—x2+10x+11y)-(—x2-20x-12y)
66
11
-—(4k3-9k2+8)-—(3k3-4k2+5k)
66
(5m2-2m-9)+(2m-7n+2)
(6x2+8x+8)-5(6x2-4x)
-3(x2-5)+5(x2+8)
-(x2y-9xy-3)-8(x2y-7xy-9)
14
(—x2+21x+13y)+(—x2-18x-11y)
55
11
-—(9k3-5k2-7)+—(2k3+9k2-4k)
62
(9m2-2m-9)+(m-7n+2)
(x2+4x+3)+9(6x2+6x)
-8(x2+1)-9(x2+9)