Simplify: (893+786)^2 -(893-786)^2 / (893*786)= ?

 Posted by HARIBOOPAL on 2/21/2011 | Category: Aptitute Test Interview questions | Views: 3241 | Points: 40
Answer:

ANSWER:

FORMULA SUBSTITUTION:

NUMERATOR: (A+B)^2 -(A-B)^2 = 4AB

DENOMINATOR:AB

=> 4AB/AB=4

THE ANSWER IS 4


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Comments or Responses

Posted by: Akiii on: 2/22/2011 | Points: 10
good trick

thanks
Akiii

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