@SuperDicq @steph The mathematics indeed write the formula with ASCII - in \LaTeX{} that is.

Beautiful isn't it?;
\scalebox{1.4}{$(x + y)^n = \mathlarger{\mathlarger{\sum}}_{k=0}^{n}\mybinom[1]{n}{k}x^ky^{n-k}$}\\
$= \mybinom[1]{n}{0}y^n + \mybinom[1]{n}{1}xy^{n-1} + \mybinom[1]{n}{2}x^2y^{n-2}+ ... + \mybinom[1]{n}{n-1}x^{n-1}y + \mybinom[1]{n}{n}x^n$\\

$\mbox{\small$ \begin{pmatrix}
\dfrac{6}{5} & \dfrac{-8}{5} \\
\\
\dfrac{26}{5} & \dfrac{32}{5}\\
\\
\dfrac{17}{5} & \dfrac{-6}{5}\\
\end{pmatrix}$} \mbox{\small$ \begin{pmatrix}
\dfrac{1}{\sqrt{2}} & \dfrac{1}{\sqrt{2}}\\
\\
\dfrac{-1}{\sqrt{2}} & \dfrac{1}{\sqrt{2}}
\end{pmatrix}$} = \mbox{\small$ \begin{pmatrix}
\bigg(\dfrac{6}{5} \times \dfrac{1}{\sqrt{2}}\bigg)+\bigg(\dfrac{6}{5} \times \dfrac{-1}{\sqrt{2}}\bigg) & \bigg(\dfrac{-8}{5} \times \dfrac{1}{\sqrt{2}}\bigg)+\bigg(\dfrac{-8}{5} \times \dfrac{1}{\sqrt{2}}\bigg) \\
\\
\bigg(\dfrac{26}{5} \times \dfrac{1}{\sqrt{2}}\bigg)+\bigg(\dfrac{26}{5} \times \dfrac{-1}{\sqrt{2}}\bigg) & \bigg(\dfrac{32}{5} \times \dfrac{1}{\sqrt{2}}\bigg)+\bigg(\dfrac{32}{5} \times \dfrac{1}{\sqrt{2}}\bigg)\\
\\
\bigg(\dfrac{17}{5} \times \dfrac{1}{\sqrt{2}}\bigg)+\bigg(\dfrac{17}{5} \times \dfrac{-1}{\sqrt{2}}\bigg) & \bigg(\dfrac{-6}{5} \times \dfrac{1}{\sqrt{2}}\bigg)+\bigg(\dfrac{-6}{5} \times \dfrac{1}{\sqrt{2}}\bigg)\\
\end{pmatrix}$}$\\


Here, you can even visually see what one LaTeX enjoyer was writing about (just compile it with XeLaTeX+tikz);
\begin{tikzpicture}
[cube/.style={thick,black},
grid/.style={very thin,black!20},
axis/.style={->,thick},
plane/.style={very thick,black},
back/.style={thin, black}]

%draw a grid in the x-y plane
\foreach \x in {-0.5,0,...,7.5}
\foreach \y in {-0.5,0,...,7.5}
{
\draw[grid] (\x,-0.5) -- (\x,7.5);
\draw[grid] (-0.5,\y) -- (7.5,\y);
}

%right wing
\draw[plane,fill=gray] (5,5,7) -- (2,5,7) -- (4,4,7);

%plane body
\draw[back] (4.5,5,4) -- (5.5,5,4) -- (5.5,4,4) -- (4.5,4,4) -- cycle;
\draw[plane] (4.5,5,10) -- (5.5,5,10) -- (5.5,4,10) -- (4.5,4,10) -- cycle;
%plane body top
\draw[plane,fill=gray] (4.5,5,4) -- (4.5,5,10) -- (5.5,5,10) -- (5.5,5,4) --
cycle;
%plane body side
\draw[plane,fill=gray] (5.5,4,4) -- (5.5,4,10) -- (5.5,5,10) -- (5.5,5,4) -- cycle;

%rear
\draw[plane] (4.5,4,2) -- (4.25,4,2) -- (4.25,4.25,2) -- (3,4.25,2) -- (5.05,5.5,2) -- (7,4.25,2) -- (5.75,4.25,2) -- (5.75,4,2) -- cycle;
%wing to body edges
\draw[back] (4.25,4,2) -- (4.5,4,4);%bottom
\draw[plane,fill=gray] (3,4.25,2) -- (5.05,5.5,2) -- (4.5,4.5,4) -- cycle;%left wingspan
\draw[back,fill=gray] (5.75,4,2) -- (5.5,4,4) -- (5.5,5,4) -- (5.75,4.25,2) -- cycle;%bottom
\draw[plane,fill=gray] (5.05,5.5,2) -- (7,4.25,2) -- (4.5,4.5,4) -- cycle;%right wingspan

%left wing
\draw[plane,fill=gray] (6,5,7) -- (9,5,7) -- (5,4,7) -- cycle;

%nose top
\draw[plane,fill=gray] (4.5,5,10) -- (5.5,5,14) -- (5.5,5,10) -- cycle;
%nose side
\draw[plane,fill=gray] (5.5,5,10) -- (5.5,5,14) -- (5.5,4,10) -- cycle;


%draw the front and and back of the cube
\draw[cube] (0,0,0) -- (0,7,0) -- (7,7,0) -- (7,0,0) -- cycle;
\draw[cube] (0,0,7) -- (0,7,7) -- (7,7,7) -- (7,0,7) -- cycle;
%draw the edges of the cube
\draw[cube] (0,0,0) -- (0,0,7);
\draw[cube] (0,7,0) -- (0,7,7);
\draw[cube] (7,0,0) -- (7,0,7);
\draw[cube] (7,7,0) -- (7,7,7);

\draw[axis,red] (5.5,5,8) -- (10,5,8) node[anchor=west]{$x$};
\draw[axis,green] (5.5,5,8) -- (5.5,10,8) node[anchor=west]{$y$};
\draw[axis,blue] (5.5,5,8) -- (5.5,5,18) node[anchor=west]{$z$};
\end{tikzpicture}\\

I want a fedi \LaTeX{} mode, so I can type that and get;