$\sin\left(x+\frac{\pi}{6}\right)=\frac{1}{2}$
$\frac{\frac{3x^2}{\left(x^2+1\right)^2}}{\frac{x}{\left(x^2+1\right)}}$
$-14-6x^3+2x-4x^3-1$
$4+3x-2x^3=y$
$m^2-y^2$
$xsen\left(y\right)=x$
$666+295$
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