a的平方+2a+1分之a-1与a的平方-1分之6怎么通分,

问题描述:

a的平方+2a+1分之a-1与a的平方-1分之6怎么通分,

(a-1)/(a²+2a+1)=(a-1)/(a+1)²6/(a²-1)=6/[(a+1)(a-1)]最简公分母为(a+1)²(a-1),于是(a-1)/(a²+2a+1)=(a-1)²/[(a+1)²(a-1)]6/(a²-1)=6/(a+1)(a-1)=6(a+1)/[(a+1)²(a-1...