Which expression is equivalent to the difference of two cubes a3−b3a^3 - b^3a3−b3?
(a−b)(a2+ab+b2)(a-b)(a^2 + ab + b^2)(a−b)(a2+ab+b2)
(a−b)(a2−ab+b2)(a-b)(a^2 - ab + b^2)(a−b)(a2−ab+b2)
(a+b)(a2−ab+b2)(a+b)(a^2 - ab + b^2)(a+b)(a2−ab+b2)
(a−b)3(a-b)^3(a−b)3