$64-16\cdot8+64$

$x-4\left(-2x^3+9x^2-5x+4\right)$

$\left(12x\:+\:y\right)\left(12x\:+\:3\right)$

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

$\frac{1+\cos\left(x\right)^2}{\sin\left(x\right)^2}+1=2\csc\left(x\right)^2$

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

$w^2+13w=20$