the given expression is,
[tex]=\mleft(-4.5\mright)^{6}/\mleft(-4.5\mright)^{2}[/tex][tex]\begin{gathered} =\mleft(-4.5\mright)^{6-2} \\ =(-4.5)^4 \end{gathered}[/tex]the quotient as power is (-4.5)^4
the quotient as repeated multiplication is,
-4.5 x -4.5 x -4.5 x -4.5