$\left(x^5-10\right)\cdot\left(x^5+10\right)$

$\int e^{-0.05x}dx$

$3\left(2x+1\right)+3\left(x-2\right)=8x$

$30-765$

$\frac{dy}{dx}\left(y=x^{x^3}\right)$

$f\left(x\right)=4\sec\left(x\right)-2\sec\left(5x\right)$

$\lim_{x\to\infty}\left(\frac{cos\left(\frac{4}{x}\right)}{x^{-2}}\right)$