a)
\(\begin{array}{l}{( - 3)^2}.{( - 3)^4} = 9.81 = 729\\ {( - 3)^6} = ( - 3).( - 3).( - 3).( - 3).( - 3).( - 3)\\ = 9.9.9 = 729\end{array}\)
Vậy \({( - 3)^2}.{( - 3)^4}\) = \({( - 3)^{6}}\)
b)
\(\begin{array}{l}0,6{}^3:0,{6^2} = 0,216:0,36 = 0,6\end{array}\)
Vậy \(0,6{}^3:0,{6^2}\) = \(0,{6}\)