$5y+4=2\left(3y+4\right)$
$9x^2-37x^2+4$
$x^2+6x-47=0$
$6\cdot2+9-2$
$\left(k-4n\right)\left(k+3n\right)$
$\left(n^{-4}\right)^{-12}$
$24x^2-24x+6$
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