please, need help on factoring

posted by .

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.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Factoring

    x2(squared)-4x+4 I would factor this into (X - 2)(X - 2) If you don't know the rules for factoring, post, and we can show you how to do it. I don't know the factoring rules. My algebra teacher couldn't teach.
  2. math

    Can someone please help me with this factoring?
  3. factoring

    could anybody help me figure out step by step how to factor this expression: x^10+x^5+1(please) p.s. i need to explain this on the hw
  4. Math(factoring)

    I need help with factoring trinomials completely. My teacher's example is: 2x^2-12x+18 2(x^2-6x+9) 2(x-3)(x-3) I need help with: 6x^2-26x-20 I just can't get this stuff so if you can please help me I'd greatly appreciate it.
  5. Algebra: factoring

    I need to find the value of x. 9x^3 + 9x = 30x^2 It's confusing because apparently I have to do 9x^3 + 9x and then add the + 30x^2 to it, and then make it equal 0, so it ends up like this: 9x^3 + 9x + 30x^2 = 0 And afterward, I would …
  6. factor the trinomial by grouping

    15x^3-9x^2-6x Can someone please show me how to factor completely.. trying to learn how to do factoring
  7. factoring help

    2 factor 4x -32x+48 and 2 2 2 factor (x -1)(x -4)(x -9) please and thank u verrry much is that this is due tommorow!!
  8. PLEASE HELP/FACTORING POLYNOMIALS

    I need to factor = 16s^6-2f^6 My answer is 2(s-8)
  9. Algebra

    This is giving me a lot of trouble. Factoring Differences of Squares Factor Completely 98-8w^2 and can you explain how you got the common factor if there is one please
  10. Algebra 1-Factor by Grouping Help!

    Factor. Use factoring by grouping even though it would seem reasonable to first combine like terms 3u^2-7-21u+49 Would be the same procedure as factoring polynomial?

More Similar Questions