$y=5x^2+6x+3$

$4\ln\left(x\right)+2\ln\left(n\right)$

$\int\left(4x^3-3x+2\right)^2\left(4x^2-1\right)dx$

$\frac{d}{dx}\frac{x}{a}+\frac{a}{x}$

$a^2-2^a-3\:entre\:a+1$

$\lim_{x\to\infty}\left(\frac{\left(x+\sqrt{\left(4x^2+8x+8\right)}\right)}{x}\right)$

$\frac{a^2-2a-3}{a+3}$