分式通分,x/6ab＾2,y/9a＾2bc1.x/6ab＾2,y/9a＾2bc2.a-1/a＾2+2a+1,6/a＾2-13.x/2(x+1),1/x＾2-x4.a/a-b,b/(a+b)＾2,2/b＾2-a＾2以上都是分式通分

分式通分,x/6ab＾2,y/9a＾2bc1.x/6ab＾2,y/9a＾2bc2.a-1/a＾2+2a+1,6/a＾2-13.x/2(x+1),1/x＾2-x4.a/a-b,b/(a+b)＾2,2/b＾2-a＾2以上都是分式通分
分式通分,x/6ab＾2,y/9a＾2bc
1.x/6ab＾2,y/9a＾2bc
2.a-1/a＾2+2a+1,6/a＾2-1
3.x/2(x+1),1/x＾2-x
4.a/a-b,b/(a+b)＾2,2/b＾2-a＾2
以上都是分式通分

分式通分,x/6ab＾2,y/9a＾2bc1.x/6ab＾2,y/9a＾2bc2.a-1/a＾2+2a+1,6/a＾2-13.x/2(x+1),1/x＾2-x4.a/a-b,b/(a+b)＾2,2/b＾2-a＾2以上都是分式通分
(1)x/6ab^2,y/9a^2bc 的公分母是18a^2b^2 c
所以x/6ab^2=3acx/18a^2b^2 c
y/9a^2bc =2yb/18a^2b^2 c
通分就是找它们（分母）的公因式
(2）∵a^2+2a+1=(a+1)^2
a^2-1=(a+1)(a-1)
∴公分母是(a+1)^2(a-1)
a-1/a^2+2a+1
=(a-1)(a-1)/(a+1)^2(a-1)
=(a^2-1)/(a^3+a^2-a-1)
6/a^2-1
=6(a+1)/(a^2-1)(a+1)
=(6a+6)/(a^3+a^2-a-1)

Rio de Janeiro, Dubai, Charles Ersiweili
Peter I Island, Antarctic exploration ship rub U.S. aircraft take 10 years to more than 190 countries over 45-year-old American Charles Ersiweili is the ...

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Rio de Janeiro, Dubai, Charles Ersiweili
Peter I Island, Antarctic exploration ship rub U.S. aircraft take 10 years to more than 190 countries over 45-year-old American Charles Ersiweili is the world's most traveled man, he visited 10 years 873 destinations worldwide in 814, including the United Nations recognized more than 190 sovereign countries. Charleston traveled to many uninhabited islands,runescape power leveling, atolls and protect the land, he would "conquer" these strange lands as a life goal, after 30 years of age. He said: "To Live is to do everything I can to see the world." Each destination is a surprise in 2004, Charles Ersiweili's name first appeared in the public view,wow power leveling, "International Herald Tribune" and the United Kingdom "Every Daily Telegraph "to" most people who travel the world, "reported the title of Charles created a new Guinness world record. Many get the Guinness Book of Records title of the people will stop there, they meet in their own name was included in the ranks of the world's strongest, as NO.1, but Charles is clearly not in this. In fact, the Guinness recognition, but Charles travel plan in a small episode. His goal is always the next destination - a place inaccessible to others, witnessed the others have never seen the picture, and accumulated mileage than others can not. Today, his footprints are 814 places around the world, travel over 2,476,275 km, cost 2.29 million U.S. dollars. Even so,aion power leveling, Charles still did not stop to mean that he had set for a total of 873 travel destinations. Peru will travel as a "competitive sports," When the 873 target will not be fully realized after the birth of a new target? Charles did not know, in his view, the Earth has many surprises waiting for people to discover, this is also his personal website creation, "the most traveled people" reasons. Web site now has over 8,000 registered members, where Charles is not only found the enthusiasts, but also inspired to continue to walk got the momentum. He called on members of the site recommended a new destination, has launched the "most people travel" list, at present, he behind in second, ahead of his is called 比尔阿尔塔弗 of California, he is only more than Charles to a destination. List of these "crazy journey home" a potential between the competition, especially in some of the people ranked list before the trip not much difference, a little "slack" there may be other people catch up . Imperceptibly into, travel in the eyes of Charles has not only its own as a hobby,power leveling, but has become a competitive sport with. The Relative News:


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