$\lim_{x\to1}\left(\frac{\left(2x+1\right)^2-9}{x-1}\right)$

$\frac{-2g^3-16g^2-11g-14}{g+8}$

$\int_0^{\frac{\pi}{3}}\left(\frac{\sin\left(x\right)}{\cos^2\left(x\right)}\right)dx$

$\int\frac{1}{x\sqrt{4-9x^2}}dx$

$m^4+6m^2+25$

$x^2-4x>-3$

$\log\left(x-2\right)-\log\left(x-3\right)=0$