$\left(x\right)\left(x-1\right)\left(x-5\right)$

$\left(3-x\right)\left(1+3x\right)^{\frac{1}{3}}$

$7\:-23\:+15\:-35$

$\left(\frac{3}{7}x^{2}-\frac{7}{3}x\right)^{2}$

$6x\left(x+3y\right)y'=6y\left(x-3y\right)$

$\int_{0}^{\frac{x^{2}-16}{4}}\frac{1}{\sqrt{2+x^{2}}}dx$

$s\:\:\left(x+2\right)^2+\left(x-2\right)^2-\left(x+4\right)^2$