$x\frac{dy}{dx}-y=x\cdot\left(\sin\left(x\right)+\pi\right)$
$2x^2+4x-48=0$
$\frac{x^2+4+x+6}{x-2}$
$36x^2-9x+36=-1$
$\sqrt[3]{\frac{4x^2-6x-7}{7x-4}}$
$m^2+4mn+4m^2$
$x+2>x-5$
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