$\int\left(3x+1\right)\text{\cdot e}^xdx$

$3y+1y$

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

$csc\left(x\right)\cdot tan\left(\frac{x}{2}\right)$

$\sqrt{\frac{6}{x}}\cdot\sqrt{\frac{x^{2}}{24}}$

$18+x^2-6x=0$

$\frac{x-2}{x\left(x-2\right)}$