How do you factor #12y^3+28y-3y-7#? Algebra Polynomials and Factoring Factoring by Grouping 1 Answer Don't Memorise May 3, 2015 We can factorise this expression by making Groups of two terms: #(12y^3+28y)-(3y+7)# # = 4y(3y + 7) - 1(3y + 7)# #3y+7# is a common factor to both the terms # = color(green)((3y+7)(4y - 1)# Answer link Related questions What is Factoring by Grouping? How do you factor by grouping four-term polynomials and trinomials? Why does factoring polynomials by grouping work? How do you factor #2x+2y+ax+ay#? How do you factor #3x^2+8x+4# by using the grouping method? How do you factor #6x^2-9x+10x-15#? How do you group and factor #4jk-8j^2+5k-10j#? What are the factors of #2m^3+3m^2+4m+6#? How do you factor quadratics by using the grouping method? How do you factor #x^4-2x^3+5x-10#? See all questions in Factoring by Grouping Impact of this question 1744 views around the world You can reuse this answer Creative Commons License