Simplify the following expression: $\sqrt{28 + \sqrt{1296}}$
So I can simplify the inner square root as 36. That gives me $\sqrt{28 + 36}$. Now I can add 28 and 36 to get 64. And 64 is also a perfect square, since it is 8 times 8. So I can simplify the outer square root as 8. That is my final answer. 