$\frac{12x^3-23x^2+13x-3}{3x-2}$
$x^2+12x+27>0$
$1\cos\left(4.415\right)t$
$\frac{x^2-2x}{x^2-5x-6}\cdot\frac{x^2+4x+4}{x^2-2}$
$-14+2\left(-9+6\cdot3\right)$
$\frac{20}{-5\left(2\right)}$
$x^2-9x+37$
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