$\sqrt{2n}^2$
$2x^2+3x-3=x^2+7x+2$
$x^2+1x+9$
$16-104a^2+169a^4$
$\sin a-12=-11.5$
$9x^{3}+24x^{2}+17x+3\times\left(3x+1\right)^{2}$
$x^3+3\left(x-1\right)$
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