$\frac{d}{dx}x\sqrt[2]{1+y}+y\sqrt[2]{1+2x}=2x$
$\left(n^2-1\right)\left(n^2+10\right)$
$3x+7\ge x+5$
$\frac{2x^3-10x^2+8x-6}{2x-1}$
$\ln\cosh\left(x\right)-\frac{1}{2}\tanh\left(x\right)^2$
$10\::\:-5$
$x+x+x+2x$
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