七年级数学下册整式的加减法计算题 48Word文档格式.docx
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61
(—x2+14x-20y)+(—x2+14x+17y)
77
11
-—(5k3+3k2+5)+—(5k3-8k2-1k)
62
(m2-5m-1)-(3m+5n+4)
(7x2+8x+8)+9(2x2-2x)
-8(x2+5)-2(x2-6)
-(x2y-9xy-4)-4(x2y+5xy+8)
(—x2-21x-10y)-(—x2-10x+29y)
55
-—(5k3+9k2+3)+—(5k3-8k2-9k)
26
(9m2-5m+1)+(8m-3n-1)
(x2-5x+4)+8(2x2-4x)
-8(x2+4)+5(x2-2)
-(x2y-9xy+8)-8(x2y+8xy+7)
18
(—x2+10x-15y)-(—x2-11x+30y)
-—(6k3+4k2-1)-—(4k3+3k2-4k)
(5m2-m-5)+(m-6n-8)
(2x2-4x-6)+5(3x2-5x)
-9(x2+7)+9(x2+4)
-(x2y-9xy+9)-7(x2y-9xy+5)
88
(—x2-13x+12y)-(—x2-19x-19y)
-—(9k3+k2+9)-—(k3+3k2+8k)
64
(6m2-2m-8)-(6m+6n+8)
(8x2+5x-8)-4(8x2+5x)
-9(x2+1)+8(x2-8)
-(x2y+3xy+7)-9(x2y-2xy-7)
(—x2+19x-10y)-(—x2-11x-25y)
-—(9k3-9k2-2)+—(k3+3k2+6k)
65
(8m2-4m+3)-(4m+6n+3)
(x2-9x-3)-6(7x2+2x)
-5(x2+6)+8(x2+8)
-(x2y-2xy-4)+5(x2y-6xy-4)
86
(—x2+18x+13y)+(—x2-11x+23y)
-—(6k3-7k2-2)+—(7k3+6k2+6k)
24
(m2-8m-4)-(m+3n+9)
(4x2-2x-9)+3(2x2-3x)
-2(x2-6)-9(x2-5)
-(x2y-4xy+4)+4(x2y+2xy+2)
21
(—x2+28x-10y)+(—x2-14x-12y)
33
-—(6k3-4k2-8)-—(9k3-5k2+2k)
44
(2m2+7m+7)+(3m+5n+6)
(9x2+4x+9)+8(x2+6x)
-3(x2+1)+5(x2-8)