SOLUTION: question to determine the limit of the function at the indicated point, or state that the function does not exist. Use the algeraic method lim 3x^2-12 divided by x+2 x arro

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: question to determine the limit of the function at the indicated point, or state that the function does not exist. Use the algeraic method lim 3x^2-12 divided by x+2 x arro      Log On


   

Question 5030: question to determine the limit of the function at the indicated point, or state that the function does not exist. Use the algeraic method
lim 3x^2-12 divided by x+2
x arrows to -2
thank you very much if anyone can help me.
Answer by rapaljer(4671) About Me  (Show Source):
You can put this solution on YOUR website!
Lim +%283x%5E2+-+12%29%2F+%28x%2B2%29+
lim +3%28x%5E2+-+4%29+%2F+%28x%2B2%29+
lim +%283%28x-2%29%28x%2B2%29+%29%2F+%28x%2B2%29+

Reduce the fraction, valid for all x not equal to -2:
lim +3%28x-2%29

Now take the limit of 3%28x-2%29+ as x approaches -2.
As it says in the Glade commerial, "Plug it in, plug it in!!"
lim = 3%2A%28-4%29+=+-12

R^2 at SCC