Mathematical Formulae

$a{x}^2+bx+c=0$
where $a\ne 0$

has roots

$$x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$$.

Area, A enclosed by a circle:

$$A=\mathrm{\pi }{r}^2$$ where $$r=\mathrm{radius}$$

The circumference, C, (the perimeter) of a circle:

$$C=\mathrm{\pi }d$$ where $$d=2r$$

Pythagorus' Theorem $$a^2+b^2=c^2$$

Mathematical
Notation