$\left(v+8\right)^2$
$b+a+c-a-c$
$6a^2+7a+2$
$\frac{d^2}{dx^2}\left(2xsec\left(2x-1\right)\right)$
$\left(95-n\right)^2$
$16\left(y^2+4y+8\right)$
$f\left(50\right)=-2.1\left(50\right)+247$
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