$\frac{7}{5}z^3p-\frac{2}{5}z^3p+\frac{10}{5}z^3p$

$\left(x^2y^3\right)^{\frac{2}{3}}$

$7x^2+6x-1$

$\frac{x^3+x}{x^2-1}$

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

$21\cdot83\cdot41\cdot27\cdot16\cdot79$

$\frac{1}{\cos\left(x\right)\left(1+\frac{\sin\left(x\right)^2}{\cos\left(x\right)^2}\right)}$