$e^{2t}cos^2t-cos^2t-e^{2t}$
$\log_e\left(1\right)$
$\frac{3c^3+7c^2-4c+16}{c+3}$
$a-\frac{1}{a}=1$
$\frac{216x^3-64}{6x-4}$
$\frac{x+5}{2x+6}>\frac{3}{2}$
$\frac{3x}{4}+\frac{x}{8}-\frac{x}{2}$
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