$0.6931471805599453\:\cdot0.3620454462036935\:$

$\left(2x^2y.4m\right)^3$

$\int264xe^{-2x}dx$

$\int\frac{2x+1}{\left(x^2+1\right)\left(x+1\right)^2}dx$

$\int\frac{x^2+x+4}{x\left(x-5\right)\left(x+5\right)}dx$

$\lim_{x\to0}\left(1+4x^2\right)^{\frac{9}{x}}$

$\int5sin^4xcosxdx$