$y=\frac{x}{\sqrt{\left(x^2+m\right)^3}}$

$h\left(x\right)=\frac{\left(x^{4}-4\right)^{4}}{\left(x^{4}-4\right)}$

$\int2x\sqrt{2x^2+1}dx$

$\left(5a-b\right)^2$

$\frac{1+\csc\left(x\right)}{\csc\left(x\right)}=\frac{\cos^2\left(x\right)}{1+\sin^2\left(x\right)}$

$\lim_{x\to\infty}\left(\frac{4x^3-x+3}{5x^2-3}\right)$

$n^2-n-12$