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Homework Help: (3p^-3 q^-1)^2 x (-4p^3 q^-2)^2 = ?

  1. Jan 18, 2012 #1
    1. The problem statement, all variables and given/known data
    (3p^-3 q^-1)^2 x (-4p^3 q^-2)^2 = ?
    Leave answer in positive indices

    2. Relevant equations

    3. The attempt at a solution
    (3p^-3 q^-1)^2 x (-4p^3 q^-2)^2 = (9p^-6 q^-2)(16p^6 q^-4)
    = 144q^-6
    = 144/q^6

    Is my answer correct or I am missing a concept? Thank you for taking the time to read.
  2. jcsd
  3. Jan 18, 2012 #2
    Is this what you need to simplify?

  4. Jan 18, 2012 #3
    Yeah, sorry. I don't know how to use that tex thingy
  5. Jan 18, 2012 #4
    looks good Mphisto.

    The question actually multiplies two squared expressions together, so if you wanted to you could take everything under a common squaring operation to simplify and square at the end. But your working is fine too.
  6. Jan 18, 2012 #5
    Then that looks good!
  7. Jan 18, 2012 #6
    Thanks for taking the time to check my answer, thank you! =)
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