Advertisement Remove all ads

Simplify : ( a + B )^(-1) . ( A^(-1) + B^(-1) ) - Mathematics

Sum

Simplify :
`( a + b )^(-1) . ( a^(-1) + b^(-1) )`

Advertisement Remove all ads

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)`

Concept: Laws of Exponents
  Is there an error in this question or solution?
Advertisement Remove all ads

APPEARS IN

Selina Concise Mathematics Class 9 ICSE
Chapter 7 Indices (Exponents)
Exercise 7 (A) | Q 2.2 | Page 98
Advertisement Remove all ads
Advertisement Remove all ads
Share
Notifications

View all notifications


      Forgot password?
View in app×