$56.42\cdot0,1$
$4x^2+12m+36$
$-3-2-3-2-3-2$
$\lim_{x\to-3}\left(\frac{x^2-9}{2x^2-7x+3}\right)$
$4am+6ac$
$-19\cdot\left(-5\right)$
$\frac{x^2-10x+25}{x-5}$
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