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Homework Help: Expanding brackets

  1. Feb 25, 2010 #1
    Where did I go wrong with this?

    -2e(e + 3) + 4 (e + 2)

    My answer is - 2e - 6e + 8
    According to my book it should be - e - 3e + 6
     
  2. jcsd
  3. Feb 25, 2010 #2
    correction
    question is:
    -2e(2 + 3) + 4(e squared + 2)
    my wrong answer:
    +2e squared + 6e + 8
    right answer:
    e squared - 3e + 6
     
  4. Feb 25, 2010 #3
    e[*SUP}2[*/SUP]
     
  5. Feb 25, 2010 #4
    [*tex]e^2[*/tex]
     
  6. Feb 25, 2010 #5

    HallsofIvy

    User Avatar
    Science Advisor

    No "*" and use ] instead of the } (which, I assume, was a typo)
    e2

    No "*".
    [tex]e^2[/tex]
     
  7. Feb 25, 2010 #6

    Mark44

    Staff: Mentor

    Please post the correct problem. You have so many corrections and changes, that I can't tell what you're trying to simplify.

    If you understand the distributive property -- a(b + c) = ab + ac -- and combining like terms, this problem is straightforward.
     
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