$\frac{x^6-30x-5}{x-2}$
$3x+1=-11$
$\frac{x^6+2}{x-2}$
$2x^4-9x^2+5x^2+13x-3\:entre\:x+1$
$\int\:\:x^3\left(2-x^2\right)^2dx$
$x^4-40x^2+144$
$\frac{x}{2}\ge-1$
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