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**1. Homework Statement**

lim sqrt(x^2-9)

x->3

**2. Homework Equations**

I understand that the radical will evaluate to 0. I am not sure if the answer to the limit is 0, or undefined

**3. The Attempt at a Solution**

lim sqrt((3)^2-9) = sqrt(9-9) sqrt(0) = 0

x->3

Thanks for your help.