$640-10x^2$
$3\sqrt{18}+5\sqrt{32}$
$x^2+7=0$
$m-9=-13$
$\int\left(1+\tan\left(x\right)\right)\:dx$
$\frac{\left(x+y\right)^3+\left(x-y\right)^3}{\left(x^2+3y^2\right)}$
$\left(5x^2-7xy\right)^2$
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