1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    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!

Homework Help: Expressing a power

  1. Feb 13, 2007 #1
    Express e in terms of c and d if [tex]2^{c}4^{d} = 8^{e}[/tex]

    Can someone give me step by step advice on how to answer this?
  2. jcsd
  3. Feb 13, 2007 #2


    User Avatar
    Science Advisor

    4= 22 so 4d= (22)d= 22d. 8= 23 so 8e= (23)e= 23e.
    Last edited by a moderator: Feb 14, 2007
  4. Feb 13, 2007 #3
    I dont get

    [tex](2^{3})^{e}= 3^{3e}[/tex]

    I see that 2³ = 8 and [tex](^{e})^{3}[/tex] is [tex]^{3e}[/tex], but how can that be [tex]3^{3e}[/tex]

    P.S Can i ask, the dot in the middle of a line, is it suppost to represent a new equaion?
  5. Feb 14, 2007 #4


    User Avatar
    Science Advisor

    That was a typo. I have corrected it.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook