$\left(2+3i\right)\left(2-3i\right)$

$n\left(n+5\right)$

$\int\left(3x^{\frac{5}{2}}\right)dx$

$\frac{dy}{dx}=7x^3-\frac{3y}{x}$

$\sqrt[3]{\left(x+1\right)\left(x-1\right)\left(x^2-x+1\right)\left(x^2+x+1\right)+1}$

$\int\left(4\sqrt{x+3}\right)dx$

$\int\frac{\sqrt{x^{2}-4}}{3x}dx$