/ 2 \ |x - 3*x| lim |--------| x->3+\ -3 + x /
Limit((x^2 - 3*x)/(-3 + x), x, 3)
= 3
3
= 3.0
/ 2 \ |x - 3*x| lim |--------| x->3-\ -3 + x /
3.0