确定分式1/a²-2a+1,a/a²-1,1/a²+2a+1的最简公分母
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确定分式1/a²-2a+1,a/a²-1,1/a²+2a+1的最简公分母
确定分式1/a²-2a+1,a/a²-1,1/a²+2a+1的最简公分母
确定分式1/a²-2a+1,a/a²-1,1/a²+2a+1的最简公分母
1/(a²-2a+1)=1/(a+1)^2,
a/a²-1=a/(a+1)(a-1),
1/a²+2a+1=1/(a+1)^2,
因此,最简公分母为(a+1)^2*(a-1)^2
a²-2a+1=(a-1)²,a²-1=(a-1)(a+1),a²+2a+1=(a+1)²故最简分母为:(a²-1)²