$x^2+\frac{3}{2}x+\frac{9}{6}$
$10a^2-5a^2$
$x^4-2x^3-13x^2+14x+24$
$16-2x,\:\sqrt{x-3}$
$-1\cdot\left(-1\right)\cdot2\cdot\left(+2\right)\cdot\left(+1\right)$
$\frac{x}{\sqrt{4x+5}}$
$2\frac{-80}{4}14$
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