$sec-2\sqrt{3}=4sec$
$\lim_{x\to\infty}\left(\frac{\left(1+4^x\right)}{1+3^x}\right)$
$27+8p^3$
$\left(3ab^{x}\right)\left(a^{2}c^{5}\right)$
$2.5+4$
$1+2\log\left(5x-100\right)$
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