Question

if p = 2- a prove that a3+6ap+p3 = 0​

Answer 1

p=2-a (equation 1)

a^3+6ap+p^3 (equation 2)

Substituting p to a,

a^3+6a(2-a)+[(2-a)^3]

= a^3+12a-6a^2-a^3+6a^2–12a+8

Ans: 8