The (a - b) 3 formula is used to find the cube of the difference between the two terms. The (a - b) 3 formula is called identity as this formula is valid for every value of 'a' and 'b'. Learn how to use the a-b whole cube formula to find the cube of the difference between two terms. See the derivation, examples and video lesson on algebraic expansion. Check the detailed explanation for the question What Is a minus b whole cube? here for your reference about the a minus b whole cube. Learn algebraic method to know how to prove the a minus b whole cube algebraic identity in algebra by multiplying the difference basis algebraic expressions.