English

Simplify : 22/2sqrt3 + 1 + 17/2sqrt3 - 1 - Mathematics

Advertisements
Advertisements

Question

Simplify :
` 22/[2sqrt3 + 1] + 17/[ 2sqrt3 - 1]`

Sum

Solution

` 22/[2sqrt3 + 1] + 17/[ 2sqrt3 - 1]`

= `[ 22(2sqrt3 - 1) + 17(2sqrt3 + 1)]/[(2sqrt3 + 1)( 2sqrt3 -1 )]`

= `[ 44sqrt3 - 22 + 34sqrt3 + 17]/[ (2sqrt3)^2 - 1 ]`

=`[ 78sqrt3 - 5]/[ 12 - 1]`

= `[ 78sqrt3 - 5 ]/11`

shaalaa.com
Simplifying an Expression by Rationalization of the Denominator
  Is there an error in this question or solution?
Chapter 1: Rational and Irrational Numbers - Exercise 1 (C) [Page 21]

APPEARS IN

Selina Concise Mathematics [English] Class 9 ICSE
Chapter 1 Rational and Irrational Numbers
Exercise 1 (C) | Q 5.1 | Page 21
Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×