$-8-2\left(-3+8\right)-10$
$\left(625u-\frac{2}{625}u^3+100u^5-8u^7\right)^2$
$cos2\left(\frac{3}{\sqrt{13}}\right)$
$\left(\frac{1}{3}x+\frac{1}{2}y\right)^5$
$x^2-12x+7=0$
$sin^2x^3$
$108-3x-x^2$
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