$6xy-\frac{5}{2}x^{4}\right)^{2}$

$\left\{2^5+\left(-2\right)^5\right\}$

$\frac{1-\sin^2\left(y\right)}{\cos\left(y\right)}$

$\tan67.27$

$0,1\:+\:a\:+\:\frac{1}{4291}$

$\lim_{x\to\infty}\left(\frac{e^x}{\left(x+1\right)^4}\right)$

$\frac{1m}{2}+\frac{2x}{3}-\frac{5}{4}x-2m$