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    Zarrin's Avatar
    Zarrin Posts: 9, Reputation: 2
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    #1

    Apr 16, 2007, 08:22 PM
    Simplify (5*6^x)+(6*6^(x+1)) ?
    Simplifying (5*6^x)+(6*6^(x+1)) = 6*6^(x+1) but I don't know why?

    It could also = 6*6^(x+2) , I don't know which one is right because 2 different places are giving me 2 different answers.

    thanks!
    galactus's Avatar
    galactus Posts: 2,271, Reputation: 282
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    #2

    Apr 17, 2007, 09:48 AM
    Hello Zarrin:

    The reason you're having trouble is because that statement is not true.

    The left side reduces to and the right side to



    Look at your equation. How could it be true, unless ?

    But that is not true for any x. Therefore, the statement is false.
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