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

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

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

expand

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

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

Solution steps

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

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

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

(T - b) (T - c) (T - d) (T - e) (T - f)

(3 - i)^{10}

(3 + 25) (2 - 3)

5 (lo g_{10} (x) y + lo g_{10} (z))

(\frac{4}{5} x - \frac{2}{7} y) (\frac{4}{5} x + \frac{2}{7} y)

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