if a+b+c=4
then

a^3+b^3+c^3-12c^2+48c-64 is equal to

• a^3+b^3+c^3-12c^2+48c-64
  =a^3+b^3-(c^3+12c^2-48c+64)
  =a^3+b^3-(4-c)^3
  =a^3+b^3-(a+b)^3
  =-3ab(a+b)
• 11 years agoHelpfull: Yes(6) No(0)