$\left(\frac{-4a}{b^{-2}}\right)^3$
$\frac{d}{dx}\left(cos\left(x^2\right)+4y^2=4sen\left(y^2\right)\right)$
$y^2\sqrt{y}$
$2\cos^2y+3\sin x-3$
$-6x\le48$
$x^2+8x=-16$
$7-3x<\frac{x}{2}$
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