$\frac{2x^4-2}{x^2\left(x^2-1\right)}$
$738+877$
$\left(5n+23m\right)^2$
$35-\left(-16\right)$
$\lim_{x\to0}\left(\frac{e^{4x}-1}{tan\left(2t\right)}\right)$
$\left(x+2y+10z+3w\right)^2$
$-x+25-3x-7$
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