How do you factor #y=3x^3 - 9x^2 #? Algebra Polynomials and Factoring Monomial Factors of Polynomials 1 Answer Sheffy Apr 9, 2016 #y=3x^2(x-3)# Explanation: #y=3xx x xx x xx x - 3xx3xx x xx x# Separate the common terms, #3xx x xx x=3x^2# and write the remaining terms in brackets: #=>y=3x^2(x-3)# Answer link Related questions What are Monomial Factors of Polynomials? How do you factor polynomials by finding the greatest common factor? How can a factoring problem be checked? How do you find the greatest common factors of variable expressions? How do you factor #3a+9b+6#? What is the greatest common factor of #a^3-3a^2+4a#? How do you factor #12xy+24xy^2+36xy^3#? How do you find the greatest common factor of #45y^{12}+30y^{10}#? How do you factor #92x^10y^4 - 54x^12y^9#? How do you factor #4x^2+x#? See all questions in Monomial Factors of Polynomials Impact of this question 1441 views around the world You can reuse this answer Creative Commons License