$9\cdot\frac{4}{9}$
$\lim_{x\to3}\sqrt[2]{5x^2-9}$
$44-\left(-6\right)+5x\left(-90\right)$
$-3h^2-90h-675$
$-\frac{1}{3}\left(\sqrt{9}\right)$
$8xy^2+3xy^2+6xy^2-2xy^2-14xy^2$
$2y^2+y-1$
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