How do you factor 42r² -3rt - 9t²? Algebra Polynomials and Factoring Factorization of Quadratic Expressions 1 Answer Manisit Das Jun 3, 2015 #42r^2 - 3rt - 9t^2 = 42r^2 - 21rt+ 18rt - 9t^2 = 21r( 2r - t) +9t( 2r-t) = (21r +9t)(2r-t) = 3(7r+3t)(2r-t)# 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 1687 views around the world You can reuse this answer Creative Commons License