$665\:-\:667-664-666$
$\frac{x^3+3x^2-9x-18}{x^2-9}$
$\frac{2^3+x^3}{2+x}$
$34\:+\:\left(-1\right)\:\left(-3\right)$
$+325-\left(-265\right)$
$\frac{j^{-1}\:.\:j^0\:.\:j^{-8}}{j^{-1}}$
$x^2+9y^2-10x+72y+25=0$
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