$\left(c+13\right)^2$
$\int8cos\left(2t-\frac{\pi}{2}\right)dx$
$\left(6wz\:+\:8w\right)$
$3.4-2.8d+2.8d-13$
$19-6\left(-v-2\right)$
$20x^3y^4z+40x^2a^4n-80x^3y^3n$
$x^2+60x+120$
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