$\lim_{x\to0}\left(\frac{log\left(n\right)^3}{x^{\frac{1}{2}}}\right)$

$\frac{\cot\left(x\right)}{\cot\left(x\right)+\tan\left(x\right)}=1-\sin^2\left(x\right)$

$-\frac{512}{64}$

$sen\:2\:u\:=\:1\:+\:cos\:2\:u$

$16a^2-b^2$

$\left(\:-48\:\right)\:+\:\left(\:+\:64\:\right)\:+\:\left(\:-87\:\right)\:+\:\left(\:+\:49\:\right)$

$\left(2x+3y\right)^2\left(2x+3y\right)^2$