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

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

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

expand

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

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

Solution steps

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

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

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

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

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

Expand

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

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

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

(x - \frac{1}{2}) (x - \frac{1}{4})

(t^{2} e^{- t} - 4 t e^{- t} + 2 e^{- t})^{2}

\frac{1}{( a - b ) ^{2}}

(cos (x) - 1) (sin (x) + 1)

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