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You can check the formulas of a minus b whole Cube in three ways. We are going to share the (a-b)^3 algebra formulas for you as well as how to create (A-B)^3 and proof. Introduction to a minus b whole cube identity with example problems and proofs to learn how to derive a-b whole cube formula in mathematics. What is a^3 - b^3 Formula? The a 3 - b 3 formula or the difference of cubes formula is as follows: a3 - b3 = (a - b) (a2 + ab + b2) You can remember these signs using the following trick. "a cube minus b cube formula" can be verified, by multiplying (a - b) and (a 2 + ab + b 2) and see whether you get a 3 - b 3. Learn how to find the cube of a binomial made up of the difference of two terms using (a - b)^3 formula. See the derivation, examples and FAQs on this algebraic identity.