$6x^3-3y^2-z+2x^2+3y^2-7z$

$34+\frac{2}{3+2}\cdot5$

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

$\frac{dy}{dx}=62.5-\frac{y}{37}$

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

$\int_0^{\frac{1}{2}}\left(\frac{x}{\sqrt{1-4x^4}}\right)dx$