$\lim_{x\to-2}\frac{2x^2-5x}{x}$
$60x-x^2=0$
$4 x ^ { 2 } - 30 x + 56 = 0$
$x^3+y^3=4$
$\int\left(\left(x\right)\sqrt[3]{1-2x^2}\right)dx$
$60-3y-9$
$9xyz=9\cdot x\cdot y\cdot z$
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