$\lim_{x\to\infty}\left(\frac{4ln\left(x^3\right)}{\sqrt{x}}\right)$

$-6n\left(n-7\right)+8\left(5+6n\right)$

$\int9x^3e^{3x}dx$

$\left(\frac{1}{2}\left(x^2-\frac{1}{x^2}\right)\right)^2$

$5x-3=3\left(2x-1\right)-x$

$144m^2+144mn+36n^2$