Question

prove
$\frac{ {a}^{ - 1} }{ {a}^{ - 1} + {b}^{ - 1} } + \frac{ {a}^{ - 1} }{ {a}^{ - 1} - {b}^{ - 1} } = \frac{ - (2 {b}^{2} )}{ {a}^{2} - {b}^{2} }$

Answer 1

$heya \: in \: this \: question \: we \: have \: to \: prove \: - (2a)^{2} not \: - (2b)^{2}$

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