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11 October, 19:41

7x to the third power - 7x to the second power = ?

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  1. 11 October, 19:53
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    7x³-7x²

    You have to divide each by the greatest common factor. In this case that is 7x²

    So now you have 7x² (x+1). Now you set each factor to 0

    x+1=0

    x=-1

    and

    7x²=0

    x=0

    Your answers are x=-1 and x=0
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