七年级数学下册整式的加减法计算题 315.docx
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七年级数学下册整式的加减法计算题315
-(x2y-7xy-9)+5(x2y-9xy-5)
97
(—x2+29x-13y)+(—x2+13x+16y)
88
11
-—(k3+9k2+5)+—(5k3+9k2+1k)
22
(7m2-6m-7)-(6m-8n-2)
(3x2+4x+1)-4(5x2-x)
-3(x2-4)-7(x2-7)
-(x2y+4xy+7)+8(x2y+8xy+2)
11
(—x2+12x+20y)-(—x2+10x-13y)
66
11
-—(9k3-9k2-2)+—(2k3-2k2+5k)
65
(6m2+3m-1)-(7m+6n+2)
(3x2+8x+2)-3(5x2-4x)
-4(x2-6)-4(x2+8)
-(x2y+3xy+2)+3(x2y-2xy-2)
77
(—x2+29x+15y)+(—x2+13x-27y)
66
11
-—(8k3-k2-9)-—(2k3-2k2-1k)
64
(m2-5m+9)+(6m-4n-2)
(x2-4x-4)+9(7x2+2x)
-4(x2-2)-5(x2+7)
-(x2y-3xy+4)-6(x2y+4xy+9)
66
(—x2-20x-15y)-(—x2-14x-16y)
77
11
-—(9k3+5k2-8)+—(9k3-7k2-3k)
23
(5m2-7m-7)-(2m-5n+2)
(5x2-2x-8)-8(7x2+6x)
-6(x2-1)-3(x2-4)
-(x2y+5xy+3)-4(x2y-3xy+3)
16
(—x2-11x+20y)-(—x2-19x+24y)
55
11
-—(6k3-3k2-2)-—(9k3-6k2+7k)
25
(2m2+9m-3)+(6m+4n+7)
(4x2-3x+3)-2(3x2-4x)
-6(x2+6)-3(x2-8)
-(x2y+9xy-2)+5(x2y+5xy-3)
91
(—x2+16x-20y)+(—x2+12x+17y)
88
11
-—(9k3-2k2-2)+—(2k3-6k2-5k)
64
(8m2+5m+8)+(5m-3n-3)
(3x2+5x-7)+5(6x2+3x)
-6(x2-6)+2(x2-1)
-(x2y-5xy+9)+9(x2y-9xy-7)
57
(—x2-29x+11y)+(—x2-19x+28y)
66
11
-—(5k3+k2-6)+—(5k3+4k2-1k)
64
(3m2-5m+8)-(m-3n+3)
(3x2-x+6)+3(4x2-7x)
-7(x2-3)-5(x2+6)
-(x2y-7xy+8)+8(x2y-3xy+6)
33
(—x2-16x-10y)-(—x2+20x+30y)
44
11
-—(9k3+8k2+2)+—(9k3-k2+1k)
44