15. Below are the steps in factoring difference of two squares. Which of the following is in correct order? 1. Factor completely following the pattern a? - b2 = (a + b)(a - b) II. Subtract the two terms in exponential form following the pattern a? - b2 III. Express the first and second terms in exponential form with a power of 2. A. I, II, III B. II, I, III C. I, III, II D, III, II, |