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

$\frac{6}{81}+\frac{4}{27}+\frac{1}{9}-\frac{10}{3}+2$

$\int\left(\frac{2}{x^2}-\frac{x}{2}-4x^{-3}\right)dx$

$\int_0^{20}\frac{1}{16}e^{-\frac{x}{16}}dx$

$\int\log\sqrt{x+1}dx$

$\int\left(sin^6\left(\frac{x}{2}\right)cos\left(\frac{x}{2}\right)\right)dx$

$1,5-4,5$