(40*40* 40-31*31*31)/(40*40+40*31+31*31)=?

• a3-b3=(a-b)(a2+ab+b2)
  so,ans=40-31=9
• 13 years agoHelpfull: Yes(5) No(0)
• ans = 9
  its in the form of [(a^3-b^3)/(a^2+ab+b^2)]=(a-b) since(a^3-b^3)=(a-b)(a^2+ab+b^2)
  a=40 b=31
  a-b=40-31=9
• 13 years agoHelpfull: Yes(2) No(0)
• here ans= 3801
• 13 years agoHelpfull: Yes(0) No(3)