Question

(a+b)^-1. (a^-1 + b^-1)​

Answer 1

Answer:

Step-by-step explanation:

Answer 2

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$= > (a + b) {}^{ - 1} .(a {}^{ - 1} + {b}^{ - 1} )$

$= > \frac{1}{(a + b)}.( \frac{1}{a} + \frac{1}{b})$

$= > \frac{1}{a + b} .( \frac{b + a}{ab} )$

$= > \frac{1}{ab}$

$= > (ab) {}^{ - 1}$

Hope it helps....