$2-4\sin^2x=0$
$\int\left(\frac{x}{\sqrt{20+8x-x^2}}\right)dx$
$4z^2-3z^2$
$\sqrt{\sqrt{81n^{16}}}$
$\sqrt[9]{1}$
$\frac{\left(\left(4x\right)+10\right)}{2}=-3x$
$y^2-3y-18$
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