$-3x^2-x+10=0$
$9^3\cdot3^3$
$15x^2y\:-\:4\left(-2xy^2-9xy\right)+12xy^2-8xy-9x$
$\int_0^0\left(\frac{\cos\left(x\right)}{x}\right)dx$
$216-x^3$
$4m^4-12m^29$
$\lim_{t\to0}\left(\frac{e^{2t}-1}{sen\:\left(t\right)\:}\right)$
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