What is expand s/((s^2+1)(s^2+4)) ?

The solution to expand s/((s^2+1)(s^2+4)) is s/(s^4+5s^2+4)

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expand s/((s^2+1)(s^2+4))

expand

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

\frac{s}{s ^{4} + 5 s ^{2} + 4}

Solution steps

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

Expand

(s^{2} + 1) (s^{2} + 4) : s^{4} + 5 s^{2} + 4

= \frac{s}{s ^{4} + 5 s ^{2} + 4}

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\frac{x ^{2}}{s \cdot ( s + x ) ^{2}}

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What is expand s/((s^2+1)(s^2+4)) ?
The solution to expand s/((s^2+1)(s^2+4)) is s/(s^4+5s^2+4)