$\frac{d}{dx}+\frac{2}{x+2}y=\frac{2}{\left(x+2\right)^4}$
$w\left[e^{-5^x}\:e^x\:e^2^x\right]$
$4\:3\:-5\:3\:4$
$a^2-50a+25$
$\int\left(-2x\sqrt{x^2+9}\right)dx$
$\frac{dx}{dy}=5x-x^2$
$x^2+15x+50$
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