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

Simplify -2rh-h^2+2r/h

  1. Jan 13, 2005 #1
    I'm trying to simplify -2rh-h^2+2r/h

    can I simplify this anymore by canceling out the h, or is that not correct. Also, I don't believe I can factor out the h in the numerator because it's not in all 3 on top, is that correct?
  2. jcsd
  3. Jan 13, 2005 #2


    User Avatar
    Science Advisor
    Homework Helper

    Yes,it cannot be factored,since it's missing from one of the terms of the sum.
    However,it can be split into 2 fractions and "symplified"...

  4. Jan 13, 2005 #3


    User Avatar
    Staff Emeritus
    Science Advisor

    Assuming you mean [itex]\frac{-2rh- h^2+ 2r}{h}[/itex], then, yes, you cannot simplify by cancelling. If this is a difference quotient and you want to take a limit as h goes to 0 then you have a problem! That limit will only exist if the numerator is also 0 when h= 0.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?