How do you find the limit of #x^2+3x# as #x->-3#? Calculus Limits Determining Limits Algebraically 1 Answer Andrea S. Jan 18, 2017 #lim_(x->-3) x^2+3x = 0# Explanation: #f(x) = x^2+3x# is a polynomial and as such is continuous on all of #RR#. So: #lim_(x->-3) f(x) = f(-3) = 9 -9 = 0# Answer link Related questions How do you find the limit #lim_(x->5)(x^2-6x+5)/(x^2-25)# ? How do you find the limit #lim_(x->3^+)|3-x|/(x^2-2x-3)# ? How do you find the limit #lim_(x->4)(x^3-64)/(x^2-8x+16)# ? How do you find the limit #lim_(x->2)(x^2+x-6)/(x-2)# ? How do you find the limit #lim_(x->-4)(x^2+5x+4)/(x^2+3x-4)# ? How do you find the limit #lim_(t->-3)(t^2-9)/(2t^2+7t+3)# ? How do you find the limit #lim_(h->0)((4+h)^2-16)/h# ? How do you find the limit #lim_(h->0)((2+h)^3-8)/h# ? How do you find the limit #lim_(x->9)(9-x)/(3-sqrt(x))# ? How do you find the limit #lim_(h->0)(sqrt(1+h)-1)/h# ? See all questions in Determining Limits Algebraically Impact of this question 1809 views around the world You can reuse this answer Creative Commons License