$\frac{d^4}{dx^4}\left(2x+1\right)^4$
$52k^2-48h^2+128hk+288h+416k+768$
$\left(2k^{2}-8k\right)+\left(-3k+12\right)$
$1 - ( 4 ) - ( 5 - 4 + 2 )$
$da=-g$
$x^2+8x+11$
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