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Homework Help: Can someone double check my work in this problem?

  1. Jun 21, 2011 #1
    1. The problem statement, all variables and given/known data

    Okay, I think these are simple, but just so I know that I am on the right track, can you double check my work? My questions and answers are in bold.

    Factor these completely:

    1. 2e^3x - 5xe^3x

    2. 4lnx -3ylnx

    3. The attempt at a solution

    1. I took out the e^3x to make the factored problem e^3x(2-5x)Did I do that right, because I get confused when dealing with the exponents. If there is more to it, can you explain please? Thanks in advance.

    2. I just took out the lnx to make it lnx(4-3y) . Is this correct?
  2. jcsd
  3. Jun 21, 2011 #2


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    They are both correct but you need parentheses. For example e^(3x). Also, while not incorrect, it is better to write the last one (4-3y)ln(x) to remove any possible misunderstanding about what is inside the ln function.
  4. Jun 21, 2011 #3
    Thanks! Just wanted to make sure they were correct because it seemed too simple. Guess I'm used to overthinking things. lol.
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