$\frac{d}{dx}\cos\left(\frac{\pi}{6}\right)$

$\left(-51.66\right)^2-4\left(16.81\right)\left(39.69\right)$

$\cos\left(x-\frac{\pi}{8}\right)$

$9y^2+45xy$

$\frac { 3 x ^ { 4 } - 5 x ^ { 2 } + 2 } { 3 + x ^ { 3 } }$

$\int\frac{14x+49}{\sqrt{x^2+7x}-1}dx$

$g\left(p\right)=p^5-3p^3$