x = - b ± b 2 - 4 a c 2 a
The quadratic formula
x = − b �± b 2 − 4 a c 25 a
x + 3
&8706 v &8706 x + P v = 0
\frac{1}{\sigma\sqrt{2\pi}}\exp\left(-\frac{(x-\mu) ^2}{2\sigma^2}\ right)
E=mc^2
a m a n a m n m n 1 m n 1 a n m m n
