$\frac{\sin\:\left(40\right)-\sin\:\left(220\right)-\sin\:\left(320\right)\:}{\sin\left(130\right)+\sin\left(230\right)-\sin\left(310\right)}$

$8b+4a+4c-3b+2a$

$-\left(-5\right)^2+4\left(-5\right)$

$8x^2-4x^3+16x^4+12x^5$

$\lim_{x\to0}\left(\frac{sin\left(x^3\right)}{x^3}\right)$

$\sqrt{\sqrt[5000]{3.1416}}$

$3x<\left(x+3\right)$