As follows: (2a+3b-4c)(2a+3b+4c) =[(2a+3b)-4c][(2a+3b)+4c] =(2a+3b)^2-(4c)^2=4a^2+12ab+9b^2-16c^2

As follows: (2a+3b-4c)(2a+3b+4c) =[(2a+3b)-4c][(2a+3b)+4c] =(2a+3b)^2-(4c)^2=4a^2+12ab+9b^2-16c^2

This problem is to use the square difference formula to provide a simple algorithm for the product of two polynomials