$\left(x-3\right)^3-x^3+27$
$6-7n-2n-8$
$-4.2+3-3.14+2.25$
$3x^2-12x+4=0$
$\int\sqrt{x^2+4x\:+9}dx$
$6x^2+19x-10=0$
$\frac{d}{dx}\left(\left(3x-4\right)^2\left(5x^2+4\right)^2\right)$
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