Question

i want this question answer

Answer 1

this is the required answer

Answer 2

a^3 + b^3 + c^3 - 3abc = (a+b+c) (a^2+b^2+c^2-ab-bc-ac)
= (3x+y+z) (9x^2+y^2+z^2-3xy-yz-3xz)