/ 2\ | 6 + 2*x | lim |-3*x + --------| x->3+\ x /
Limit(-3*x + (6 + 2*x^2)/x, x, 3)
-1
= -1
/ 2\ | 6 + 2*x | lim |-3*x + --------| x->3-\ x /
-1.0