$\frac{dy}{dx}+\frac{1}{3x}y=4$
$10x+-18+-18$
$\frac{x^2+x+4}{x^3-25x}$
$\sqrt{\left(358.85m\right)^2}+\left(-12.5m\right)^2$
$\frac{4^4}{4^2}$
$cos\left(a\right)=\frac{cos\left(a\right)}{1+cos\left(a\right)}$
$\int e^{-ax}dx$
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