Limits: Find (in terms of the constant a)

[Notlim]

Homework Statement

Find (in terms of the constant a)

lim (√8(a+h) - √8a)/h
h=>0

Homework Equations

The Attempt at a Solution

I tried a few ways of simplifying the numerator and trying to cancel out the h's but each time I try it doesn't come out right at all or I still have the variable h floating around somewhere

 

[jgens]

Multiply the top and bottom by [8(a+h)]^1/2+[8a]^1/2.