$\frac{2}{7}+\frac{5}{7}$
$\left(-5+7i\right)+\left(2+7i\right)$
$\sqrt[3]{a^2b\sqrt[2]{a^3b^5}}$
$\left(\sin\left(x\right)\right)^2=\frac{1}{2}$
$\ln\left(\sec\left(2\pi\:\right)+\tan\left(2\pi\:\right)\right)$
$4x^2\:+\:20x\:+\:25\:=\:1$
$\lim_{x\to0}\left(\frac{x^2}{\left(x-ln\left(x\right)\right)}\right)$
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