515*515*515-221*221*221/(515*515+515*221*221+221)

• (a3-b3)/(a2+ab+b2)
  Solving the above
  (a-b)
  Ans: 515-221=294
• 9 years agoHelpfull: Yes(13) No(1)
• But in question denominator is a2+ab2+b
• 9 years agoHelpfull: Yes(11) No(3)
• a^3-b^3=(a-b)(a^2+a*b+b^2)
  Question is in the form of a^3-b^3/(a^2+a*b+b^2) which is equal to a-b
  answer is 515-221=294
• 9 years agoHelpfull: Yes(7) No(0)
• it is not in the form (a^3-b^3)(a^2+ab+b^2)
  it is in(a^3-b^3)(a^2+a(b)^2+b).....a-b is incorrect
• 9 years agoHelpfull: Yes(6) No(0)
• wrong ques
  
• 9 years agoHelpfull: Yes(3) No(0)
• By formulae -a^3-b^3/a^2-ab+b^2=a-b
• 9 years agoHelpfull: Yes(1) No(0)
• a-b
  515-221=294
  simple formula
• 9 years agoHelpfull: Yes(0) No(0)
• a^3-b^3/a^2+ab+b^2=a-b
• 9 years agoHelpfull: Yes(0) No(0)
• a-b
  515-221=294
• 9 years agoHelpfull: Yes(0) No(0)
• 515^3 -221^3 /515^2+515*221+221^2
  =515-221
  =294
• 9 years agoHelpfull: Yes(0) No(0)
• -515/221
  componendo and dividendo
• 9 years agoHelpfull: Yes(0) No(0)