$\csc\left(\arctan\left(4x+1\right)\right)$
$3x^2+5x+20x^2$
$\lim_{x\to0}\left(\cos\left(x\right)\left(1+\tan\left(2x\right)^{\frac{4}{x}}\right)\right)$
$\left(3m+8b\right)^3$
$\frac{2\cdot107}{63\times10^{-27}\cdot123\times10^{-9}}$
$t\cdot\frac{dx}{dt}=x\left(1-t\right)$
$5y\:+\:3\:+\:4y\:-\:2\:+\:3y\:+\:8\:-\:4$
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