$\frac{d}{dx}x^2-\frac{2x}{y^2}=12x$
$8\left(-3x+2\right)<6\left(3x-11\right)$
$\infty-\infty-1$
$x^2\left(\frac{\left(108-x^2\right)}{4}\right)$
$2cos^2x-3cosx+1$
$9\left(-5\right)+11$
$\left(x+7\right)\left(2x+8\right)$
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