$\left(3x-7\right)^2\left(3x+7\right)^2$
$\left|-3+4\right|$
$\log\left(x^2-1\right)-\log\left(x+1\right)$
$tan\left(\sqrt{7x}\right)$
$x^2-2x-12>0$
$4\left(5\right)^2-7\left(5\right)-6$
$\left(x+2y-4\right)^2$
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