$\left(5x^2-3\right)x^3-x$

$2+\frac{1}{\tan\left(y\right)^2}+\tan\left(y\right)^2=\csc\left(y\right)^2\sec\left(y\right)^2$

$\frac{d}{dy}\left(4\cos\left(x\right)\cos\left(y\right)=3\right)$

$\int e^{3x}\:sen\left(\frac{x}{3}\right)dx$

$\left(10-6\right):\left(-2\right)+\left(-8\right)$

$\left(\frac{2}{5}a^6-\frac{7}{2}a^4b^2+\frac{8}{5}a^2b^4-\frac{1}{6}b\right)\left(\frac{1}{2}ab^2c\right)$

$2m^{2x-1}+3m^{2x-1}$