$56^2-49^2$
$\int_0^2\left(x^2\ln\left(x\right)\right)dx$
$5ydx+xdy=0$
$2x^5-4x^3+4x$
$2y+4-y+3$
$\frac{8z^6-y^9}{2z^2-x}$
$7\:\cdot\:3000$
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