$\:\left[\left(-470\right)\:+\:\left(-6.090\right)\right]+\left[\:494\:+\:\left[\:3.456\:+\:\left[\:643\:+\:\left[\:5\:+\:\left(-2\right)\right]\right]\right]\right]$

$ln\left(y\right)=ln\left(\left(x^4+2\right)^{tan\left(x\right)}\right)$

$\left|124-61\right|+21$

$\lim_{x\to2}\left(\frac{6e^x}{x}\right)$

$\frac{2x}{3}+2=10$

$2x^2+6x+5=0$

$\int2x^2\left(x^3+5\right)^7dx$