$y2^2+6x^8\cdot y$
$\left(x^3+4x^2+4x+1\right)+\left(x+1\right)$
$w^2-2w+2$
$\frac{dy}{dx}=3xy-2$
$cos\:800\:.cos200\:+\:sen\:800.sen\:200$
$2x^3y^2-6x^3y^2$
$-4sin\left(2t\right)cos\left(t\right)$
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