$\frac{dy}{dx}=9.8-y$

$2+\left(4z^{-1}\right)^{-2}\left(1-z\right)+\left(z+1\right)^2+z$

$2a-\left\{7a-\left(3a-7b\right)+\left(10a-9b\right)\right\}$

$\arcsin\left(\sin\left(\frac{7\pi}{4}\right)\right)$

$\left(m-8\right)\:\left(m+8\right)$

$\frac{d^8}{dx^8}\left(e^x\cdot\cos\left(x\right)\right)$

$\int_{4x-9}^4dx$