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Adding exponents

  1. Feb 15, 2012 #1
    This is a really basic problem and I just need some review.
    How do I add 2k+1 + 2k+1?

    This is where I am stuck

    212k+212k
     
  2. jcsd
  3. Feb 15, 2012 #2

    eumyang

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    Homework Helper

    Think of it this way. Can you add
    x + x?
    y + y?
    something + something?
    This is what the expression
    2k+1 + 2k+1
    merely is. Once you get that, then you can use the appropriate property of exponents.
     
  4. Feb 15, 2012 #3
    Oh I see, so it would be..

    2*2k+1 = 2k+2

    and just another one for fun

    2k+1+2k+1+2k+1+2k+1 = 4*2k+1 = 2*2*2k+1 = 2k+3

    Does this seem correct?
     
  5. Feb 15, 2012 #4

    Mark44

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    Insights Author

    Staff: Mentor

    Not only does it seem correct, it is correct.
     
  6. Feb 15, 2012 #5
    Cool thanks !
     
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