$4m+8$

$\lim_{x\to4}x$

$\frac{\tan\left(x\right)^2-\sin\left(x\right)^2}{\cot\left(x\right)^2-\cos\left(x\right)^2}$

$-\left(5+\left(-12\right)\right)+\left(5-9+\left(-1\right)\right)$

$\frac{dy}{dx}+\:2xy\:+\:x\:y^4\:=\:0$

$10\left(d-5\right)^2^a-\left(c+3\right)^3-\left(b+6\right)^5c^2$

$\log_z\left(\frac{2}{e}\right)$