Algebra

First, we have to write this in standard form by combining all like terms and moving all terms to one side. We get $x^2+11x-49>0$

Using the quadratic equation, we get $x<\frac{-\sqrt{317}-11}{2}\quad \mathrm{or}\quad \:x>\frac{\sqrt{317}-11}{2}$. 

Putting this into interval notation, we have $(\frac{-\sqrt{317}-11}{2}, \frac{\sqrt{317}-11}{2})$. 

This isn't a hard problem to do. It is annoying we have square roots and an unfactorable polynomial, but not too bad in general!

Thanks! :)