What is expand-(8x)/((x^2+1)^2) ?

The solution to expand-(8x)/((x^2+1)^2) is -(8x)/(x^4+2x^2+1)

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expand-(8x)/((x^2+1)^2)

expand

- \frac{8 x}{( x ^{2} + 1 ) ^{2}}

- \frac{8 x}{x ^{4} + 2 x ^{2} + 1}

Solution steps

- \frac{8 x}{( x ^{2} + 1 ) ^{2}}

(x^{2} + 1)^{2} = x^{4} + 2 x^{2} + 1

= - \frac{8 x}{x ^{4} + 2 x ^{2} + 1}

\frac{cos ( 3 x ) - 16 sin ( 3 x )}{( cos ( 3 x ) ) ^{2}}

3 y (y + 2) (y - 2) + 5

\frac{( e ^{- 5 s} + s ^{2} + s )}{s ( s ^{2} + 4 )}

\frac{1}{1000} x^{3} - 76 x^{2} + 1228 x - 2160

(- 2 x + 23)^{2}

What is expand-(8x)/((x^2+1)^2) ?
The solution to expand-(8x)/((x^2+1)^2) is -(8x)/(x^4+2x^2+1)