$m^2=\frac{36}{25}$
$\lim_{x\to2}\left(\frac{5^x-9x-7}{2x^2-x-2}\right)$
$\frac{dy}{dx}\left(x-y\right)$
$6x+42=66$
$15x^2+x-2$
$w^7x\:w^5$
$b^2+33-13b$
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