化简a+1分之a的三次方-a+1分之a=?
问题描述:
化简a+1分之a的三次方-a+1分之a=?
答
原式=a³-a/a+1
=a(a²-1)/a+1
=a(a-1)(a+1)/a+1
=a(a-1)
=a²-a