$1.4+6+3-7$

$12x-y+5-9x+1$

$\frac{d}{dx}\left(x\right)=\:\frac{x\left(1+x^2\right)^3}{\left(1+x^3\right)^{\frac{1}{3}}}$

$\int\left(\frac{1}{\left(x-4\right)ln\left(x-4\right)}\right)dx$

$1-\sin^2\left(x\right)+\tan^2\left(x\right)-\tan^2\left(x\right)\sin^2\left(x\right)$

$\:log5\:\left(12x+5\right)=3$