How do you factor s2−9? Algebra Polynomials and Factoring Factoring Completely 1 Answer Chaoyi Z. May 8, 2015 To factor s2−9, you will need to use the difference of two squrares. This property tells us that (x2−y2) can be rewritten as (x−y)(x+y) In this case, s2−9 will become (s−3)(s+3), which is the answer you are looking for. Answer link Related questions What is Factoring Completely? How do you know when you have completely factored a polynomial? Which methods of factoring do you use to factor completely? How do you factor completely 2x2−8? Which method do you use to factor 3x(x−1)+4(x−1)? What are the factors of 12x3+12x2+3x? How do you find the two numbers by using the factoring method, if one number is seven more than... How do you factor 12c2−75 completely? How do you factor x6−26x3−27? How do you factor 100x2+180x+81? See all questions in Factoring Completely Impact of this question 2944 views around the world You can reuse this answer Creative Commons License