$\lim_{x\to-8}\left(\frac{x^3+14x^2+49x}{x+7}\right)$

$\lim_{x\to3}\left(\frac{x^2-2x+3}{x^2-4x+3}\right)$

$\left(8x^{-1}\right)^{-1}$

$\int x^5\sqrt{9x^2-1}dx$

$\frac{0.06^1}{0.0006^{-2}}\cdot\:\frac{0.06^{-1}}{0.02^1}$

$\frac{d}{dx}\left(\frac{5x}{e^x}\right)$

$sin\left(8x\right)cos\left(5x\right)$