$\int\frac{e^{-2x}}{1-e^{-2x}}dx$

$\int\frac{3x+2}{\left(x^2+x\right)\ln\left(x^3+x^2\right)}dx$

$7\left(2\right)^6\left(3a^3\right)$

$5cos^22x$

$\int\frac{1}{2\left(x-4\right)}-\frac{1}{2\left(x-2\right)}dx$

$x^2-3\ge6$

$2m\left(3b+4\right)^3+2\left(3b+4\right)^2+\left(3b+4\right)$