[(55*55*55)-(42*42*42)=...???

• [(55*55*55)-(42*42*42)= 166375 - 74088 = 92287
• 12 years agoHelpfull: Yes(2) No(2)
• (a^3-b^3)=(a-b)(a^2+ab+b^2+ab)
  a=55,b=42
  (55*55*55)-(42*42*42)=(55-42)(55^2+55*42+42^2)
  =92287(ans)
  
• 12 years agoHelpfull: Yes(2) No(3)
• As we know a^3-b^3=(a-b)^3+3ab(a-b)
  So, (55*55*55)-(42*42*42)
  =(55-42)^3+3*55*42*(55-42)
  =13^3+3*55*42*13
  =2197+90090
  =92287
• 12 years agoHelpfull: Yes(0) No(1)
• as we know (a^3-b^3)=(a-b)(a^2+ab+b^2)
  a=55,b=42
  (55*55*55)-(42*42*42)=(55-42)(55^2+55*42+42^2)
  =92287(ans)
• 12 years agoHelpfull: Yes(0) No(1)