1. PF Contest - Win "Conquering the Physics GRE" book! Click Here to Enter
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

How is this simplified?

  1. Mar 22, 2008 #1

    simplifies to a+b

    I didn't think I could simply divide because of the subtraction.
    Is that how this is simplified ?
    If not then please give me a bump in the right direction.
  2. jcsd
  3. Mar 22, 2008 #2
    expand this for me ...


    "Difference of squares ..."
  4. Mar 22, 2008 #3
    Find out what you get by multiplying b-a and b+a.
  5. Mar 22, 2008 #4
    do you know polynomial division? (btw, your result is valid only when a is not equal to b)
  6. Mar 22, 2008 #5
    Argggh!! Thanks everyone!
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook