(a的平方-a)除以(a-1)分之a
问题描述:
(a的平方-a)除以(a-1)分之a
答
a平方`(当A不等于1)
答
(a^2-a)/[a/(a-1)]
=a(a-1)*(a-1)/a
=(a-1)^2
=a^2-2a+1.
答
(a的平方-a)除以(a-1)分之a
=(a^2-a)/[a/(a-1)]
=(a^2-a)*(a-1)/a
=a(a-1)*(a-1)/a
=(a-1)^2