$\frac{7}{2}\left(\frac{2}{3}z^{\frac{3}{2}}\right)-\frac{7}{2}\left(\frac{2}{3}z^{\frac{7}{2}}\right)$

$\frac{x^3+3x^2-9x-18}{x^2-9}$

$xy'+y=3x\sqrt[2]{y}$

$\int_{-o.3}^{0.2}4e^{8x}dx$

$\left(-\frac{ab}{2}\right)\left(\frac{ab}{2}\right)$

$7n\left(3n+1\right)$

$1^2+1^2\ln\left(x\right)$