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1-75.
  1. Helen thinks . Felicia does not agree. Homework Help ✎

    1. Use various values of x to check whether or not Helen is correct.

    2. Find an accurate expression for .

Try evaluating different numbers. Be sure to include positive numbers, negative numbers and fractions.

If both n and −n give you the same value, n, how can we alter Helen's statement to make it true?