(A + B + C) cubed

  • (A + B + C) cubed

    Richard Forringer
    Ways to expand the trinomial (A + B + C) to the 3rd power. The author connects this expansion with a standard method of binomial expansion. The author asks the question, "What is the area of a square whose side measures A + B?" then moves strategically to the question "What is the volume of a cube whose side measures A + B + C?"  He continues by looking for an algebraic shortcut to find the product.