$\sqrt{x+2}=10$
$-8+12-3+9-1-15+7$
$12x+5y-4x+3-y$
$14m^2n-7mn$
$y'=3x$
$3\sqrt[3]{3a}\cdot9\sqrt[3]{7a^2}$
$3x^2\left(2x-5\right)$
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