$\frac{tanxsec^2x}{3}+\frac{2tanx}{3}$

$\left(-123\right)+\left(-547\right)-\left(123\right)$

$\tan\left(x\right)=\left(\frac{6}{13}\right)$

$f\left(y\right)=\frac{\left(1+6\right)}{y}$

$64a^9b^{12}+8b^{21}$

$\frac{dy}{dx}+\frac{2xy}{x^2+1}=\frac{1}{x^2+1},\:y\left(0\right)=3$

$16a^2m^3y^6+28m^5y^2-8a^2my^6$