$5\:x\:5\:x\:5$
$\frac{15w^3x^5}{-9w^5x^2}$
$5a^2\:-\:3a\:-\:2$
$\frac{7}{2}^{-4}$
$44d+25+36d^2$
$-x^2+3x+2$
$x+1+2\sqrt{x+1}+1$
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