$\sqrt{\left(4-4.5\right)^2}$
$\int3\left(3x-11\right)^9dx$
$cos\left(x\right)-sen^2\left(2x\right)+2sen^2\left(x\right)-1$
$z^3+9z^2+27z+27$
$12x^2\left(x-3\right)$
$x^2-11xy+9y^2+16xy$
$3x^3-6x^2$
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