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    cruzcora's Avatar
    cruzcora Posts: 1, Reputation: 1
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    #1

    Oct 31, 2006, 07:07 PM
    equation
    what the answer for x2-4=0 use a graph to estimate the solutions of the equiation
    s_cianci's Avatar
    s_cianci Posts: 5,472, Reputation: 760
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    #2

    Oct 31, 2006, 07:58 PM
    Graph the equation, either by hand or by graphing calculator. Either way, it's fairly easy to see that the solutions are x = 2 and -2. This can also easily be done by factoring.
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