$6m^2+13m-5$
$3x^2+2y^2+12y-24x+60=0$
$\frac{x^2-1}{-x^2+2x-1}\le1$
$9+4x-3x+9$
$1-2\:\cos^2x=\sin x\:\cos x\left(\tan x-\cot x\right)$
$x\:5\:-\:3\:x\:4\:-\:4\:x\:$
$\sqrt{45:9.3+1}$
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