$-\sqrt{x}+\frac{3}{\sqrt{x}}$
$\cos\left(x\right)\sin\left(x\right)+\frac{\cos\left(x\right)}{2}=0$
$1-2+3-4+5-6+7-8+9-10$
$18\left(-11+9y\right)-3y$
$416,7\:-\:392,18$
$1\cdot2187$
$\frac{\left(-2x^2-6y^2\right)}{y^3-x^2y}$
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