$\left(9c+9b\right)^2$
$\frac{-4x^4+3x^3+12x^2-14x+20}{x-5}$
$\left(y^2-\frac{1}{4y^2}+1\right)^2$
$2^{15}-2^{14}$
$3\left(42\right)$
$\left(csc\theta\:-sen\theta\:\right)2cos^{\left(2\right)}\theta\:\cdot cot\theta\:$
$9\left(a+b\right)$
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