$\frac{10x^3+10x}{5x}$

$5x^2-6x\cdot2x-2$

$\frac{dy}{dx}\left(2+x^2\right)=\frac{x}{y}$

$-\frac{5}{2}+\frac{4}{3}\left(2a\right)$

$\left(5+5y\right)^2$

$8^{\left(\left(-5\right)+\left(-7\right)\right)+1}$

$\lim_{x\to\frac{\pi}{2}}\left(xtan\left(x\right)-\frac{\pi}{2}sec\left(x\right)\right)$