Testing LaTeX

\Huge

\int_{0}^{1}\frac{x^{4}\left(1-x\right)^{4}}{1+x^{2}}dx
 =\frac{22}{7}-\pi

\[
x = \frac{{ - b \pm \sqrt {b^2  - 4ac} }}{{2a}}
\]


\[
x =  \pm \sqrt {3x^2 }
\]