$x\frac{dy}{dx}+2x^2y$
$4x^2-16x-36$
$y'-y=y^2e^x$
$-5x^2-32x-24$
$\cos2\left(x\right)-3\sin^2\left(x\right)=0$
$m=x^4y^5$
$\lim_{n\to infinity}n$
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