# Homework Help: Limit as x approaches negative infinity

1. Mar 6, 2010

### hangainlover

1. The problem statement, all variables and given/known data

as x approaches negative infinity, what value does this function approach ?

limit square root (X^2+X) + X

2. Relevant equations

3. The attempt at a solution
First, i manipulated the given function to take out absolute (x) from the square root

so, what i get is, limit absolute value (x) square root (1+1/x) +x

now, i get infinity - infinity. (looks like an indeterminate form)

I do not know where to go from this point.

Thanks

2. Mar 7, 2010

### vela

Staff Emeritus
Pull the x down into the denominator, then use L'Hopital's rule.