$5y''-4y'+4y=0$
$0.96+v-0.57$
$\lim_{x\to1}\left(\cos\left(\frac{x^3-1}{x-1}\right)\right)$
$\left(\frac{2}{5}x-\frac{1}{2}\right)^3$
$4x^4-4x$
$x^2+6x+9=\left(x+3\right)$
$\left(\:3a^2\:\cdot\:2a\:\right)^2$
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