English

Simplify the following: 8sqrt(3) – 3sqrt(27) + 6/sqrt(3) - Mathematics

Advertisements
Advertisements

Question

Simplify the following:

`8sqrt(3) - 3sqrt(27) + 6/sqrt(3)`

Simplify
Advertisements

Solution

`8sqrt(3) - 3sqrt(27) + 6/sqrt(3)`

Step 1: Simplify each radical term

`sqrt(27) = sqrt(9 xx 3) = 3sqrt(3)`

So, `-3sqrt(27) = -3(3sqrt(3)) = -9sqrt(3)`

`6/sqrt(3) = 6/sqrt(3) xx sqrt(3)/sqrt(3) = (6sqrt(3))/3 = 2sqrt(3)`

Step 2: Substitute back

`8sqrt(3) - 9sqrt(3) + 2sqrt(3)`

Step 3: Combine like terms

`(8 - 9 + 2)sqrt(3) = 1/sqrt(3)`

shaalaa.com
  Is there an error in this question or solution?
Chapter 1: Rational and Irrational Numbers - MISCELLANEOUS EXERCISE [Page 18]

APPEARS IN

B Nirmala Shastry Mathematics [English] Class 9 ICSE
Chapter 1 Rational and Irrational Numbers
MISCELLANEOUS EXERCISE | Q 6. (ii) | Page 18
Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×