$\left(5n+2\right)\left(2n-1\right)$

$5+2\ln\left(x\right)=3$

$y=x+2^{x+2}$

$\left(x^4-x^3+2x^2-4x-8\right)\left(x^4+x^3-x^2+x-2\right)$

$\lim_{x\to0}\left(\frac{\sqrt{n}}{\sqrt{n+1}}\right)$

$\frac{dy}{dx}+\left(2tan2t\right)=cos2t$

$\lim_{x\to\infty}\left(\frac{5x^3+2x^2-7}{x^4-3x}\right)$