$\lim\:_{x\to\:1}\left(2^x+x\right)^{\frac{1}{x}}+\lim\:_{x\to\:0}\left(\frac{cos\left(x-1\right)}{x}\right)$

$\ln\left(x+14\right)-\ln\left(8-3x\right)=3\ln\left(2\right)$

$4m^2n^2\cdot3mn$

$\left(\frac{1}{4}x-2y^3\right)^2$

$\int4e^{-2x}dx$

$\int\left(\frac{-10}{4x^3}\right)dx$

$3a^25ab^2-6a^2b^3\:\:entre\:-2^a$