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

$cos\:t\:cot\:t\:=\:\frac{1-sin^2\:t}{sin\:t}$

$\frac{dy}{dx}=2x+7y$

$sen^2\left(x\right)-4sen\left(x\right)+4$

$\left(5-7\sqrt[2]{2}\right)\cdot\left(5+7\sqrt{2}\right)$

$f\left(x\right)=\left(2x-3\right)^6$

$\left(2m^2-3n\right)^2$