$\frac{2x-6}{x^2-5x+6}$
$\frac{d}{dx}2.4^x+\pi^2$
$w\:-\:5=1$
$x^2+2x-35<0$
$\frac{tan26-tan\left(-19\right)}{1+tan26tan\left(-19\right)}$
$\left(\frac{2}{5}p-a\right)^2$
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