来自桂志芳的问题
通分3个式子a²-25/a²+10a+25a+5/a²-5aa²+5a/5-a
通分3个式子
a²-25/a²+10a+25a+5/a²-5aa²+5a/5-a
1回答
2020-06-09 14:51
通分3个式子a²-25/a²+10a+25a+5/a²-5aa²+5a/5-a
通分3个式子
a²-25/a²+10a+25a+5/a²-5aa²+5a/5-a
a²-25/a²+10a+25=(a+5)(a-5)/(a+5)²=(a-5)/(a+5)a²-5a=a(a-5)5-a=-(a-5)最简公分母a(a+5)(a-5)a²-25/a²+10a+25=a(a-5)²/a(a+5)(a-5)a+5/a²-5a=(a+5)²/a(a+5)(a-5)a...