$x^{2+3x+2}$
$487.38-29.97$
$\left(3k\right)\left(k+1\right)+\left(2\left(3k+1\right)\right)$
$+2x-3x-5x+7x+3x+4x-2x$
$x^2-30x-8800=0$
$6x^2-117x+660$
$\left(x\right)^2\left(x^5\right)^4\left(x^2\right)^3$
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