$\left(x+2\right).\left(x-1\right)<0$

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

$3^5\cdot3^8\cdot\left(3^2\right)^4\cdot3^0\cdot3\left(3^3\right)^4\cdot3^4\cdot3^2$

$-15+62+3-20+2-19-11-2$

$2x^2-4x+1>0$

$\left(-53\right)\cdot\left(-915\right)$

$\lim_{x\to\infty}\left(2x-5\right)\frac{3}{lnx}$