$\frac{\left(8x-4\right)}{x^2+2x}$

$\left(a^2-5a+6\right)\left(3-a\right)$

$\int e^x\sec^2e^xdx$

$\sqrt[20]{x}\cdot\sqrt[20]{x^2}\cdot\sqrt[20]{x^3}\cdot\sqrt[20]{x^4}$

$\lim_{x\to0}\left(\frac{\left(x+13\right)^2-169}{x}\right)$

$\left(-6x^3+9x^2+4\right)-\left(-5x^3+2x-5\right)$

$-6\le\frac{g}{7}-7$