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

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

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

expand

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

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

Solution steps

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

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

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

\frac{( a - b ) ^{2}}{a + b}

y^{3} (2 y^{2} - 3) d y

\frac{d}{d x} ((z (x, y)) (x^{2} + y^{2}))

[y (4 x + y) - 2 (x^{(2)} - y)] \cdot (- 2) ln ∣ y ∣

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