$xy-x+2y=3$
$x^2+6x-2$
$\sqrt{2}+\sqrt{32}$
$\frac{\left(\senx+\cos x\right)}{\sen^{2}x-\cos^{2}x}$
$b^22bc+c^2$
$-3\left(1+\left(-10\right)\right)$
$w^2+16w+25$
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