$2\cdot\log\left(x-2\right)-\log\left(x+4\right)=0$

$-8\left(5-5n\right)=-240$

$\frac{dy}{dx}=\frac{3x^2+5}{y^2}$

$\int\frac{1}{8}x\cdot\left(x+3\right)^8$

$2\left(4^3\right)-7$

$\lim_{x\to\infty}\left(x\cdot\sin\frac{4}{x}\cdot\cos\frac{6}{x}\right)$

$6^{2\:\:}x\:7^3$