$x^2-9x+4.5$
$\left(x+\frac{3}{2}\right)^2$
$7xy\:+\:15x^2y\:+\:15xy\:+\:5x^{2\:}y$
$\int\frac{x^3}{\left(x^2+9\right)^{0.5}}dx$
$3m+\:2\:\left(5\:+\:m\right)\:+\:5m$
$\left(2x^5+7\right)^2$
$3x-1\le2x+4$
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