Post a New Question

please, need help on factoring

posted by on .

factor x^3-(x+y)^3

  • please, need help on factoring - ,

    in general
    a^3-b^3 = (a-b)(a^2 + a b + b^2)
    so
    (x-x-y)(x^2+x^2+xy +x^2+2xy+y^2)
    -y ( 3x^2+3xy+y^2)

  • please, need help on factoring - ,

    If you multiply out (x+y)^3 and subtract it, you get rid of the x^3 terms, and then factor out y.

    x^3 -(x^3 + 3x^2y + 3xy^2 +y^3)
    = -y(3x^2 + 3xy + y^2)

    The term in parentheses does not factor with integer coefficients.

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question