$\frac{d^2}{dx^2}\left(\frac{1}{2}x^2-5\right)^5$

$86-33-64+87-97+10+99-99$

$\frac{1+\cos\beta-\sin^{2}\beta}{\sin\beta\left(1+\cos\beta\right)}$

$\left(x\cos y\right)\left(xcosy\right)$

$\int_{-1}^1\left(\frac{1}{x-3}\right)dx$

$4tan\left(x\right)+8=0$

$12x^2-4<27x-23$