What is expand (1-2e^{-s}+e^{-2s})/(s(s^2+4)) ?

The solution to expand (1-2e^{-s}+e^{-2s})/(s(s^2+4)) is (1-2e^{-s}+e^{-2s})/(s^3+4s)

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expand (1-2e^{-s}+e^{-2s})/(s(s^2+4))

expand

\frac{1 - 2 e ^{- s} + e ^{- 2 s}}{s ( s ^{2} + 4 )}

\frac{1 - 2 e ^{- s} + e ^{- 2 s}}{s ^{3} + 4 s}

Solution steps

\frac{1 - 2 e ^{- s} + e ^{- 2 s}}{s ( s ^{2} + 4 )}

Expand

s (s^{2} + 4) : s^{3} + 4 s

= \frac{1 - 2 e ^{- s} + e ^{- 2 s}}{s ^{3} + 4 s}

(a^{2} b - 3)^{2}

\frac{1}{2} (5 + \frac{1}{2} ln (2 + 5))

\frac{1 + x}{1 - 2 x}

x (x + 3 i) (x - 2 i) - x i

\frac{1}{( s - 2 ) ( s - 1 ) ^{2}}

What is expand (1-2e^{-s}+e^{-2s})/(s(s^2+4)) ?
The solution to expand (1-2e^{-s}+e^{-2s})/(s(s^2+4)) is (1-2e^{-s}+e^{-2s})/(s^3+4s)