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Math Help - Simplify and write each as a single power.

  1. #1
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    Simplify and write each as a single power.

    Hey guys,

    the task: Simplify. Write each as a single power. Do not evaluate.

    (-Q)^2 (-Q)^5 (-Q)

    my final answer would be = -Q^8

    but I got the answer, that -Q^8 is not the final answer for this task.
    It should be = -Q^8 = (-1*Q)^8 = (-1)^8 Q^8 = Q^8

    Could somebody explain why?
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  2. #2
    Senior Member MaxJasper's Avatar
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    Lightbulb Re: Simplify and write each as a single power.

    (-q)^2=+q^2

    (-q)^5=-q^5
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  3. #3
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    Re: Simplify and write each as a single power.

    so what about:

    (-2)^7
    -------
    (-2)^3
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  4. #4
    Senior Member MaxJasper's Avatar
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    Lightbulb Re: Simplify and write each as a single power.

    =(-2)^(7-3=4) = +(2)^4
    Thanks from ford2008
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