$6x^2y+12x-3xy$

$\lim_{x\to2}\left(\frac{x^5-32}{x^2-4}\right)$

$7\left(\sqrt[4]{2x}\right)^2$

$-6\left(-4y^2+4\right)$

$\left(1-sin^2\left(5x\right)\right)^3$

$\int\left(-\frac{\sec^2x}{3}\right)dx$

$2\cos^2\left(\theta\right)-\sqrt{3}\cos\left(\mathit{\theta}\right)=0$