$4\left(x+2\right)-3\left(x-5\right)x\:$

$\left(1+sec\left(x\right)\right)\left(sec\left(x\right)-1\right)=\frac{sin\left(x\right)sec\left(x\right)}{cos\left(x\right)csc\left(x\right)}$

$\frac{dy}{dx}-2y=6x+6$

$\left(x-2y+z\right)\left(x-2y-z\right)$

$y\cdot ln\left(y\right)dx-xdy=0$

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

$\int\left(\frac{x}{ye^x}\right)\:dx$