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: 7^2x+3 / 7^x^2 = 1

  1. Feb 23, 2012 #1
    1. The problem statement, all variables and given/known data
    Solve the equation
    7^2x+3 / 7^x^2 = 1

    2. Relevant equations



    3. The attempt at a solution

    How can i "breakdown" 7^x^2? Thank you!
     
  2. jcsd
  3. Feb 23, 2012 #2
    Are you sure breaking down 7^x^2 is the only way?
    Try cross multiplying it to the other side and observe.
     
  4. Feb 23, 2012 #3
    Oh I got it! I managed to solve it =) thanks!
     
  5. Feb 23, 2012 #4

    Mark44

    Staff: Mentor

    Is the numerator supposed to be 72x + 3 or 72x + 3 or 72x + 3?

    I suspect that it's the first. If that's what you meant, write it as 7^(2x + 3) so that it is unambiguous.
     
  6. Feb 24, 2012 #5
    And, to be unambiguous, type "7^(x^2)"

    if you mean [itex]7^{x^2}.[/itex]
     
  7. Feb 25, 2012 #6
    Yeah, I meant that
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook