$\int_{-2}^2x^4\left(x^3-x\right)dx$
$\left(m+4\right)\left(m+9\right)$
$-\:3\:-\:\:\left(-5\right)\left(4\right)\:+\:18\::\:\left(\:-\:3\right)\:-\:\left(-14\:+\:21\right)$
$4y^2-4y+31$
$6-4\cdot6$
$\sen[x-\frac{\pi}{3}]+\frac{\sqrt{3}}{2}$
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