$0=cos\left(\frac{\pi}{6}x\right)$

$2x^2-6x+3x+4x$

$\lim_{x\to\infty}\left(\frac{e^{-x}}{\sqrt{x}}\right)$

$3x^2-12x+4=0$

$-3\left|-6+7\right|+\left|-7\right|$

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

$\left(\frac{1}{2}x^3\right)\left(-\frac{2}{3}a^2x\right)\left(-\frac{3}{5}a^4m\right)$