$\left(\sqrt[3]{x}+\sqrt[3]{y}\right)\left(\sqrt[3]{x^2-\sqrt[3]{xy}+\sqrt[3]{y^2}}\right)$

$6x\:-10y\:-2x\:-6y$

$\frac{1}{\cos\left(a\right)\sin\left(a\right)}=\frac{2}{\sin\left(2a\right)}$

$1.7w^2=10.625$

$\frac{dy}{dx}y=\frac{1}{5}x^5-3x^4+9x^2+1$

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

$\sec a-1=\csc a\left(\tan a-\sin a\right)$