$\int5t\cdot e^{5t}dt$

$\int\frac{\left(9e^x+6e^{-x}\right)}{\left(9e^x-6e^{-x}\right)}dx$

$8x^2+32=0$

$\int\left(x\cdot\left(x+1\right)\right)dx$

$\lim_{x\to\frac{\pi}{2}}\left(\frac{\log\left(\sin\left(x\right)\right)}{\left(\pi-2x\right)^2}\right)$

$\left(0.1-3x\right)^3$

$\frac{20x^2}{5x^2}$