$\int\sin\frac{1}{2}\left(3x\right)\cos^33xdx$
$-\frac{x^6}{x^4}$
$\frac{25m^6n^4-4}{5m^3n^2-2}$
$x^2\:+\:18x\:-144$
$t^2-14=0$
$560\cdot3.55$
$\frac{2x}{5}-\frac{x}{4}=9$
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