$\frac{senx}{cosx}+\frac{cosx}{senx}=\frac{secx}{senx}$
$\int\left(3x^2-8x+9\right)dx$
$\left(x-1\right)\left(\sqrt{x}+1\right)$
$\frac{dy}{dx}=\frac{6x^2}{7y^3}$
$m3+3m^2n+3mn^2+n^3$
$100a^2b^3c\:-\:150ab^2c^2\:+\:50ab^3c^3\:-\:200abc^2$
$x\left(8x^7\right)$
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