### Home > CALC > Chapter 1 > Lesson 1.2.4 > Problem 1-75

1-75.

Helen thinks

. Felicia does not agree. Homework Help ✎ Use various values of

*x*to check whether or not Helen is correct.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?