$x^3-9x^2+27-27$
$\frac{27m^3+125n^3}{32m+5n}$
$tan^2x\left(1-sen^2x\right)cscx=\frac{1}{2}$
$x^2-28x+28$
$\int\:5^{7x+3}dx$
$\int11tan\left(6x\right)sec^2\left(6x\right)dx$
$3^3x^{-3}y^{-2}$
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