What is the simplest form of the radical expression?
3^3√2a − 6^3√2a
\(3^3\sqrt{2a}-6^3\sqrt{2a}=\\ \sqrt{2a}\left(3^3-(3\cdot 2)^3\right)=\\ \sqrt{2a}3^3(1-2^3) = \\ 27\sqrt{2a}(-7) = \\ -189\sqrt{2a}\)
+193 
