Question

Can anyone solve the above question with full explanation.. answer na likh daiyo kala.. that i also know​

Answer 1

Answer:

$({{a}^{ - 1} - {b}^{ - 1} }) ^{ - 1}$

Step-by-step explanation:

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