$\lim_{x\to-2}\left(\frac{-6\left|x\right|+12}{3x+6}\right)$
$\left(3xy-2x\right)^2$
$9x^2-70x+25=0$
$25m^2\:+\:20mx\:+\:4x^2$
$\lim_{x\to2}\frac{x^3-x^2-3x+2}{x^2-5x+6}$
$\frac{6x^5}{4x^2}$
$-3x>-14$
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