a3-b3 formula? What is the formula of a3-b3

a³-b³= (a-b)³+ 3ab(a-b)

a³-b³= (a-b) [(a-b)² + 3ab]

a³-b³= (a - b) (a²+b²-2ab+3ab)

a³-b³= (a - b) (a²+b²+ab)

a³-b³= (a - b) (a²+ab+b²)

a³-b³ = (a - b) (a²+ab+b²)