$1-\left(-14\right)$
$2sin4x+\sqrt{3}=0$
$\frac{\left(x+3\right)^2}{x-1}$
$a^2-2^a-3entre\:a+3\:$
$\frac{x}{x+2}+\frac{3}{x+4}=1$
$-157-242$
$8\sin^2x-11senx+3=0$
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