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5-53.

What values of will make the following equations true?

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    or

    or

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    Add to both sides.
    This problem should look familiar now.

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    Can the absolute value of anything ever equal a negative number?

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    Take the square root of both sides. You should now have two equations,
    and
    This looks a lot like part (a).

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    Add to both sides. Now follow the same steps as in part (d).

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    Can you square any real number and get a negative result?