$y^2+4x^4=4x$
$\frac{\sqrt{2x-1}}{\sqrt{x+1}-1}=1$
$14y+150$
$3\sin\left(2t-\frac{\pi}{4}\right)+4\cos\left(2t\right)$
$5\sqrt{x^3}$
$-5\:x^2\:y.\left(-4\:x^3\right)$
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