Answer:
P = a^6 - b^6
= (a^3)^2 - (b^3)^2
= (a^3 + b^3)(a^3 - b^3)
= (a + b)(a^2 - ab + b^2)(a - b)(a^2 + ab + b^2)
= (a + b)(a - b)(a^2 - ab + b^2)(a^2 + ab + b^2)
= (a^2 - b^2)(a^2 - ab + b^2)(a^2 + ab + b^2)
=> Option D is correct.
Hope this helps!
:)
