$2\left(x+4\right)\left(x+6\right)$
$\lim_{x\to\infty}\left(\frac{x-2}{x+1}\right)^{3x-2}$
$\frac{x+4}{5x+5}$
$\sin x+1=0$
$sin3a=3sina-4sin^3a$
$-\frac{9}{6.66}$
$\lim_{x\to0}\left(\frac{x-3\sqrt{x}}{x-\sqrt{x}}\right)$
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