$5\cos\left(x\right)+12=-3\cos\left(x\right)+20$

$\frac{81m^2-1}{9m+1}$

$\int\left(\frac{xe^{4x^2+1}}{8}\right)dx$

$\frac{dy}{dx}=\frac{2xy}{x^2+1}+1$

$4\log_m\left(x\right)-\frac{1}{3}\log_m\left(w\right)+5\log_m\left(y\right)$

$6\sqrt{7}\cdot3\sqrt{7}$

$8x^2-4x+16$