Question

complete the identity (a-b)^3​

Answer 1

(a−b)3⇒(a−b)×(a−b)×(a−b)

(a−b)×(a−b)×(a−b)

a2−ab−ba+b2×(a−b)

a2−2ab+b2×(a−b)

a3−2a2b+ab2−a2b+2ab2−b3

this simplifies into

a3−b3−3ab(a−b)

Answer 2

(a-b)³=a³-b³-3ab(a-b)

OR

(a-b)³=a³-b³-3a²b+3ab²