$\frac{x}{3x-2}\ge1$

$\lim_{x\to\infty}\ln\left(\frac{\left(2+x\right)}{1+x}\right)$

$\left(\cos\left(x\right)+\sin\left(x\right)\right)^2-\left(2\cos\left(x\right)\sin\left(x\right)-\left(\sin^2\left(x\right)+\cos^2\left(x\right)\right)\right)$

$\frac{dy}{dx}\left(4x^2-x^3y^4+8y=3\right)$

$12-15\left(-4-6\left(-12-14-16\right)-5-9\right)$

$2-4u+8u$

$3\:n\:-\:4\:=\:3\:-\:4\:n\:\:\:\:\:\:\:\:\:\:\:$