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

The solution to expand-(-s^2+4)/((s^2+4)^2)+s/(s^2+4) is -(-s^2+4)/(s^4+8s^2+16)+s/(s^2+4)

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

expand

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

- \frac{- s ^{2} + 4}{s ^{4} + 8 s ^{2} + 16} + \frac{s}{s ^{2} + 4}

Solution steps

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

(s^{2} + 4)^{2} = s^{4} + 8 s^{2} + 16

= - \frac{- s ^{2} + 4}{s ^{4} + 8 s ^{2} + 16} + \frac{s}{s ^{2} + 4}

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What is expand-(-s^2+4)/((s^2+4)^2)+s/(s^2+4) ?
The solution to expand-(-s^2+4)/((s^2+4)^2)+s/(s^2+4) is -(-s^2+4)/(s^4+8s^2+16)+s/(s^2+4)