$-\frac{120}{3}$
$11x+11x+4x^4+4x^4$
$2d^2+6d^2+5+2$
$\frac{2x^2-4x-4}{x-2}$
$\int-4cosx\:dx$
$\cos\left(a+\frac{\pi}{2}\right)=-\sin\left(a\right)$
$8m^2-12mn+m$
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