$x^2-18x+55=0$
$8\cdot1,5$
$\lim_{x\to-5}\left(\frac{x^4+5x^3-2x-10}{x+5}\right)$
$\sqrt[5]{128m^{12}}$
$\left(m^6n^4+3\right)^3$
$\left(-4ab\right)^3\cdot\left(-2b\right)$
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