$2\sin\left(-x\right)$
$\frac{6t^2\:u^6\:}{2t\:u^2\:}$
$4x^3-4x^2-x+1$
$4.58+4.83$
$\int sen\left(5x\right)\:dx$
$\left(x-\frac{3}{5}\right)\left(x+\frac{5}{4}\right)$
$-15+2+4-1$
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