Find the domain of the function $f(x)=\frac{2x-7}{\sqrt{x^2}} - \sqrt{5x+6-11}$.
For the first function x can be any real number except 0
For the second function , we have to have that
5x + 6 - 11 ≥ 0
5x - 5 ≥ 0
5x ≥ 5
x ≥ 1 [this is the domain ]
+279 
