$\left(1-\frac{3}{x}\right)^{2x}$

$\left(8y+am\right)\left(8y-am\right)$

$\frac{dy}{dx}=\left(y^2-3y\right)$

$\lim_{x\to0}\left(\frac{ne}{n+1}\right)^n$

$2a+b=7$

$\left(4x+1-\cos^2x\right)\cdot\frac{1}{\sin\left(x\right)}$

$2cos\left(4\theta\:\right)cos\left(-\theta\:\right)-2sin\left(4\theta\:\right)sin\left(-\theta\:\right)=\sqrt{2}$