Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: How would you simplify [tex]a(y-b/3a)^3[/tex]

  1. Mar 25, 2010 #1
    Cannot figure out how to distribute this, please help :D- sorry about title should be [tex]a(y-\frac{b}{3a})^3[/tex]
     
  2. jcsd
  3. Mar 25, 2010 #2

    berkeman

    User Avatar

    Staff: Mentor


    Start by writing out the terms to be multiplied:

    [tex]a(y-\frac{b}{3a})(y-\frac{b}{3a})(y-\frac{b}{3a})[/tex]

    and just multiply terms out After you multiply the first two sets of parens, you will get a quadratic with 3 terms, and then you multiply that by the finl 2-term part in the final parens...
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook