$\int\frac{\sqrt{z}^2+1}{z}dz$
$-7^0$
$3x^2-15x+7=0$
$7x^2+7x-42$
$\left(5r\:+\:7f\:-\:2\right)^2$
$\ln\sqrt{3-x^2}$
$x^2>3x-2$
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