七年级数学下册整式的加减法计算题 300.docx
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七年级数学下册整式的加减法计算题300
(9m2-2m-6)-(m-n-8)
(5x2-x+4)-2(4x2-3x)
-3(x2-2)+3(x2-1)
-(x2y+6xy+2)-2(x2y-5xy-9)
53
(—x2+30x-10y)-(—x2-12x+10y)
44
11
-—(6k3-6k2-4)+—(k3+9k2-6k)
64
(m2-m-4)+(9m-6n+7)
(x2-x-4)+4(5x2+4x)
-4(x2-9)-5(x2+4)
-(x2y+4xy+2)-8(x2y-9xy+3)
66
(—x2+17x-18y)-(—x2-18x-15y)
77
11
-—(k3-5k2-8)+—(7k3+2k2+1k)
64
(6m2+2m+1)-(5m-3n+9)
(7x2+7x-2)-3(3x2-8x)
-4(x2-3)+5(x2+3)
-(x2y-5xy+9)+8(x2y+4xy+3)
71
(—x2+24x+10y)+(—x2+11x+18y)
88
11
-—(7k3-k2-3)-—(5k3-k2+6k)
44
(8m2+3m-3)+(9m-3n-3)
(7x2+5x-8)+5(x2-x)
-9(x2+4)+7(x2-6)
-(x2y+7xy-8)+9(x2y+6xy+4)
44
(—x2+18x-17y)+(—x2-12x+16y)
55
11
-—(6k3+5k2-3)-—(9k3-2k2-3k)
46
(6m2-3m+6)+(3m+6n+1)
(7x2+9x+3)+2(5x2+3x)
-2(x2-1)+6(x2-9)
-(x2y+9xy-5)-7(x2y-2xy+5)
24
(—x2-21x-13y)+(—x2+20x+22y)
33
11
-—(6k3+8k2-5)+—(2k3+7k2-4k)
23
(4m2+7m+3)+(3m-n+6)
(2x2+4x-9)+2(4x2-3x)
-5(x2+2)-7(x2-1)
-(x2y-4xy-5)+9(x2y-5xy-2)
11
(—x2-25x-17y)+(—x2+10x-17y)
66
11
-—(3k3+9k2-5)-—(8k3+k2-8k)
64
(9m2+4m+3)+(3m+3n-7)
(6x2+2x-2)+6(x2-5x)
-5(x2-5)-5(x2-4)
-(x2y+3xy-8)-5(x2y-8xy+4)
86
(—x2+26x-18y)-(—x2+17x+24y)
77
11
-—(k3+6k2+1)-—(3k3-9k2-4k)
43
(5m2+6m+4)+(7m-n-3)
(x2+6x+3)+5(9x2-4x)
-6(x2+9)+3(x2+7)