$\frac{dy}{dx}\:=\:\frac{6x^2}{y^2}$

$\left(15-28\right)-\left(-22\right)$

$\sin\left(70\right)\cos\left(20\right)-\cos\left(50\right)\cos\left(10\right)$

$\frac{d^4}{dx^4}\left(\cos\left(3x^2-4y^3\right)\right)$

$2\:\frac{2}{3}x^2+330\:\frac{2}{3}x$

$\left(12^3\right)^9$

$6y^37x^2+4+4x^2-1-5y^3+x^2$