$9x^2+3+4$
$\frac{5-\sqrt{-5}}{5}$
$-2-3-5-7-9-11-13-15$
$\left(\frac{15x^3y}{4}\right)\left(\frac{8xy^2}{5}\right)$
$2mx-3nx\:+\:4xy$
$26\cdot55$
$2\left(3\right)^4-3\left(3\right)^3+4\left(3\right)^2-2\left(3\right)+3$
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