What is expand-(2a)/(pi(n-1)(n+1)) ?

The solution to expand-(2a)/(pi(n-1)(n+1)) is -(2a)/(pin^2-pi)

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expand-(2a)/(pi(n-1)(n+1))

expand

- \frac{2 a}{π ( n - 1 ) ( n + 1 )}

- \frac{2 a}{π n ^{2} - π}

Solution steps

- \frac{2 a}{π ( n - 1 ) ( n + 1 )}

Expand

π (n - 1) (n + 1) : π n^{2} - π

= - \frac{2 a}{π n ^{2} - π}

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What is expand-(2a)/(pi(n-1)(n+1)) ?
The solution to expand-(2a)/(pi(n-1)(n+1)) is -(2a)/(pin^2-pi)