$8.25=\log\left(\frac{177.8}{x}\right)$

$\left(4x^2-2x\right)^4$

$\sin^{-1}\left(\frac{x+2}{2}\right)-2sen^{-1}\left(\frac{\sqrt{x}}{2}\right)$

$0.5+0.4-\frac{2}{5}$

$\int\frac{-2e^{2x}}{e^{2x}+3e^x+2}dx$

$\lim_{x\to0}-\left(x^2-2x\right)^{x^2}$

$\lim_{x\to\infty}\left(\frac{3^x}{xe^x}\right)$