Custom arrows and boxes in the Beamer

Question

I have the following Beamer slide:
begin{frame}[fragile]{Potenciação}
   begin{block}{Propriedades de Potenciação}
      begin{align}
         a^n &= a . a . a ldots a rightarrow n enspace fatores
         a^n &rightarrow a enspace (textbf{base}) enspace e enspace n enspace (textbf{expoente})
      end{align}
   end{block}
end{frame}

Is it possible to customize my box and the arrows on my Beamer slide similar to this figure?

Zarko · Accepted Answer

With use of the tcolorbox package:

documentclass{beamer}
usepackage{amsmath}
usepackage{tikz}
usetikzlibrary{tikzmark}
usepackage[skins]{tcolorbox}
tcbset{enhanced, nobeforeafter,
        colback=cyan!5!white,
        colframe=cyan,
        width=linewidth, 
        halign=center}
begin{document}
begin{frame}%[fragile]
frametitle{Potenciação}

begin{tcolorbox}[drop shadow=cyan!50]
    $begin{aligned}
       a^n= underbrace{a{cdot}a{cdot}a dotsm a}_{n text{ fatores}}
            &qquadqquad&
       tikzmarknode{A}{a}^{nleftarrowtext{ expoente}}
    end{aligned}$
end{tcolorbox}
    begin{tikzpicture}[overlay,remember picture]
    draw[->, shorten <=2pt] (A.south) |- ++ (2em,-1em)
            node[right, font=footnotesize] {base};
    end{tikzpicture}
end{frame}
end{document}

For above image of frame you need to compile NWE at least twice.

mxnc baud · Answer

Maybe this would better match your expectations :
usepackage{amsmath}
usepackage{amsfonts}
usepackage{amssymb}
setbeamercolor{block title}{bg=red!10,fg=black}
setbeamercolor{block body}{bg=red!10}
setbeamertemplate{blocks}[rounded][shadow=false]
begin{document}
begin{frame}[fragile]{Potenciação}
   begin{block}{Propriedades de Potenciação}
      begin{flalign*}
        &bulletquad a^n= underbrace{a . a . a ldots a}_{ n enspace fatores}&
        &bulletquad(textbf{base})leftarrow a^{nleftarrow(textbf{expoente})} 
      end{flalign*}
   end{block}
end{frame}
end{document}

By using TikZ one could reproduce exaclty the example you showed but maybe you wanna stick to the beamer class and only adjust beamer settings.

Custom arrows and boxes in the Beamer

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