通分,下面得几个式子..急挖.http://hiphotos.baidu.com/my%5Fbest%5Flove%5F4%5Fu/pic/item/961cffc335600c44b319a8e9.jpg

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通分,下面得几个式子..急挖.http://hiphotos.baidu.com/my%5Fbest%5Flove%5F4%5Fu/pic/item/961cffc335600c44b319a8e9.

通分,下面得几个式子..急挖.http://hiphotos.baidu.com/my%5Fbest%5Flove%5F4%5Fu/pic/item/961cffc335600c44b319a8e9.jpg
通分,下面得几个式子..急挖.
http://hiphotos.baidu.com/my%5Fbest%5Flove%5F4%5Fu/pic/item/961cffc335600c44b319a8e9.jpg

通分,下面得几个式子..急挖.http://hiphotos.baidu.com/my%5Fbest%5Flove%5F4%5Fu/pic/item/961cffc335600c44b319a8e9.jpg
1.ab/a^2b=1/a
2.(x^1)y/(x+1)y^2=(x-1)/y
3.[(a-b)(a^4-a^2b^2)]/[(a+b)(a^2-ab)]
=[a^2(a-b)(a-b)(a+b)]/[a(a+b)(a-b)
=a(a-b)