Advertisements
Advertisements
Question
Simplify :
`( a + b )^(-1) . ( a^(-1) + b^(-1) )`
Sum
Advertisements
Solution
`( a + b )^(-1) . ( a^(-1) + b^(-1) )`
= `1/( a + b ) xx ( 1/a + 1/b )`
= `1/( a + b ) xx ([ b + a ]/[ ab ] )`
= `1/( a + b ) xx ( a + b )/(ab)`
= `1/(ab)`
shaalaa.com
Laws of Exponents
Is there an error in this question or solution?
