$x^2+8\ge6x$

$\left(\sec\left(x\right)-\csc\left(x\right)\right)\sin\left(x\right)\cos\left(x\right)$

$\left(-8\right)+\left|\left(+7\right)-\left(-4\right)+\left(-5\right)\right|$

$\lim_{x\to1}\left(\frac{x^2-1}{x^2}\right)$

$\frac{dy}{dx}-3y=-9x$

$2\frac{dy}{dx}-6y=6$

$\frac{3x^2}{x^5}$