Freddy

Hi my name is Freddy

$e=mc^{2}$

$x={\frac {{\color {Blue}-b}\pm {\sqrt {\color {Blue}b^{2}-4{\color {Red}a}{\color {green}c}}}}{2{\color {red}a}}}$
$\forall x\in X,\quad \exists y\leq \epsilon$

Failed to parse (syntax error): {\displaystyle \frac{1}{{{n}^{4}} }