algebra

if f(x)=2*3,how do I find f(x)^(x)?

\(f(x)=2x=2\cdot 3=6\\x=3\) 

\(f(x)^x=6^3=216\)

\(f(x)=3x=3\cdot 2=6\\x=2\)

\(f(x)^x=6^2=36\)

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