How do you factor the expression #d^2+10d+9#? Algebra Polynomials and Factoring Factorization of Quadratic Expressions 1 Answer Roella W. Dec 23, 2015 #(d+9)(d+1)# Explanation: To factor the expression #ax^2 + bx +c# find the factors of c that add up to give b. In this case 9 and 1 add up to 10 so the factorized expression is #(d+9)(d+1)# Answer link Related questions How do you factor trinomials? What is factorization of quadratic expressions? How do you factor quadratic equations with a coefficient? What are some examples of factoring quadratic expressions? How do you check that you factored a quadratic correctly? How do you factor #x^2+16x+48#? How do you factor #x^2-9x+20#? Question #3fdac How do you factor #8+z^6#? There is no GCF to be factor out, so is there another method to complete this? How do you factor #2t^2+7t+3#? See all questions in Factorization of Quadratic Expressions Impact of this question 3026 views around the world You can reuse this answer Creative Commons License