Question

Formula of a cube plus b cube plus c cube

Answer 1

Answer:

a³+b³+c³ = (a+b+c) (a²+b²+c²-ab-bc-ca) + 3abc

Answer 2

Given: $a^3+b^3+c^3$

$a^3+b^3+c^3-3abc=( a + b + c)(a^2 + b^2 + c^2 - ab - bc - ca)$

          $a^3+b^3+c^3=( a + b + c)(a^2 + b^2 + c^2 - ab - bc - ca)+3abc$