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

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

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

expand

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

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

Solution steps

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

Expand

s (e^{- 2 L s} + 1) (e^{- L s} + 1) : e^{- 3 L s} s + e^{- 2 L s} s + e^{- L s} s + s

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

(3 x + 1)^{2}

(tan (x) - 1) (cot (x) + 1)

- 2 (3 + 57)

(2 - 1) 4

(25 - x^{2} + x - 5) (25 - x^{2} - x + 5)

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