$\lim_{x\to4}\left(x^2+3\right)$

$\left(x^3+\frac{3}{2}x^2+4x-2\right)\left(x^3+\frac{3}{2}x^2+4x-2\right)$

$cos^4x\:-\:sin^4x$

$2x^2\:+72\:\:\:+\:\:\:\:2x^2\:+\:2$

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

$\frac{10}{\sqrt{x}-\sqrt{3}}$

$\int\left(5x+2\right)e^xdx$