七年级数学下册整式的加减法计算题 388Word格式.docx
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-(x2y+2xy+2)-3(x2y-2xy+3)
11
(—x2-10x+11y)+(—x2+13x-26y)
44
-—(4k3+6k2+5)-—(4k3-4k2-3k)
62
(5m2-6m-7)+(9m+6n+1)
(7x2-9x+4)-7(5x2+6x)
-4(x2+7)+9(x2+5)
-(x2y+6xy+8)+3(x2y-7xy-6)
71
(—x2+16x+10y)-(—x2-20x-15y)
66
-—(7k3+3k2+8)-—(7k3-7k2-7k)
25
(8m2+7m+4)-(9m-9n+7)
(4x2-2x+6)-6(8x2+9x)
-7(x2+6)-3(x2+3)
-(x2y+2xy+2)-7(x2y-2xy+4)
51
(—x2+29x+11y)-(—x2+18x-19y)
-—(k3+7k2-2)+—(2k3-5k2+9k)
63
(2m2+5m-8)-(4m-n-7)
(x2+2x+5)+2(7x2+5x)
-9(x2+9)+8(x2-8)
-(x2y+2xy-4)-3(x2y-6xy-3)
22
(—x2-12x+14y)-(—x2-14x+13y)
33
-—(k3+2k2-4)-—(4k3-8k2-7k)
42
(4m2+5m-4)-(3m+3n-3)
(2x2+7x+3)-8(x2-9x)
-8(x2-2)+9(x2-7)
-(x2y+9xy-3)+4(x2y-8xy+4)
(—x2+10x+10y)-(—x2+15x-18y)
-—(8k3-k2-7)-—(8k3+k2+8k)
(9m2+m+3)+(2m+n+5)
(5x2-9x-1)+9(3x2-x)
-4(x2+1)+2(x2+2)
-(x2y-7xy-4)+2(x2y-5xy-5)
57
(—x2+28x-13y)-(—x2+14x-22y)
-—(9k3-2k2-6)-—(6k3-k2+3k)
24
(8m2-5m+3)+(6m-5n-8)
(3x2-8x+3)-8(7x2+2x)
-9(x2+6)+6(x2+4)
-(x2y+3xy+5)-7(x2y-7xy-4)
(—x2+25x-14y)+(—x2+17x-18y)
-—(3k3+k2-6)-—(4k3-9k2+4k)
(6m2+8m-7)-(3m+n+4)
(6x2-x+5)-9(7x2-3x)
-2(x2-8)-9(x2-7)