If a^2+b^2=117 and ab=54 then find the value of a+b/a-b.

 Posted by Hariboopal on 2/25/2011 | Category: Aptitute Test Interview questions | Views: 5305 | Points: 40
Answer:

Answer:

(a+b)^2=a^2+b^2+2ab
= 117+2*54=225
=> a+b=15


(a-b)^2=a^2+b^2-2ab
= 117-2*54=9
=> a-b=3



then a+b/a-b
=15/3=5


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Comments or Responses

Posted by: Akiii on: 2/26/2011 | Points: 10
Good one, continue giving more Hariboopal.

Thanks and Regards
Akiii

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