Math
An example of math within a paragraph — \({e}^{i\pi }+1=0\) — easy enough.
And an equation on it’s own:
\[ {x}_{1,2}=\frac{-b\pm \sqrt{{b}^{2}-4ac}}{2a} \]
That’s it.

“DollarMath”
An example of math within a paragraph — ${e}^{i\pi }+1=0$ — easy enough.
An example of math within a paragraph, ${e}^{i\pi }+1=0$, easy enough.
And an equation on it’s own:
$${x}_{1,2}=\frac{-b\pm \sqrt{{b}^{2}-4ac}}{2a}$$

Not Math
An example of math within a paragraph — $ {e}{i\pi }+1=0$ — easy enough.
And an equation on it’s own:
$$ {x}_{1,2}=\frac{-b\pm \sqrt{{b}{2}–4ac}}{2a}$$
An example of math within a paragraph — ${e}{i\pi }+1=0 $ — easy enough.
And an equation on it’s own:
$${x}_{1,2}=\frac{-b\pm \sqrt{{b}{2}–4ac}}{2a} $$
An example of math within a paragraph — a${e}{i\pi }+1=0$ — easy enough.
And an equation on it’s own:
a$${x}_{1,2}=\frac{-b\pm \sqrt{{b}{2}–4ac}}{2a}$$
An example of math within a paragraph — ${e}{i\pi }+1=0$b — easy enough.
And an equation on it’s own:
$${x}_{1,2}=\frac{-b\pm \sqrt{{b}{2}–4ac}}{2a}$$b
Bibliography