$5x\:-\:2y\:+\:\:3z\:-\:2x\:+\:y\:-\:\left[\:x\:-\:\left(\:2x\:+\:3y\:+\:z\right)\:+\:2y\:\right]\:$
$5x^2+2x+25$
$\:-350\:+2640$
$\frac{5}{x}+\frac{2}{3}=-\frac{3}{x}$
$\left(x^6y^8-x^5y^8\right)^2$
$\left(-\frac{452}{31200}\right)+\left(+\frac{3248}{3307.5}\right)+\left(+\frac{592}{1575}\right)+\left(-\frac{212}{360}\right)+\left(-\frac{448}{985.359375}\right)+\left(\frac{168}{2450}\right)+\left(\frac{136}{11088}\right)$
$\frac{dy}{dx}+y+2x^2=1$
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