$27+125a^9$
$3y^{''\:}+2y^{'\:}+8y=0$
$\lim_{x\to0}\left(\frac{4^x-1}{8^x-1}\right)$
$5b+2b-b+3b-4b$
$3\left(-1\right)\:+\:2\left(-2\right)$
$2x-3<4-2x$
$-\:6a^3\:+\:5a^3\:+\:2a^2\:-\:a^2$
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