### Home > CALC3RD > Chapter Ch1 > Lesson 1.2.4 > Problem 1-72

1-72.

Helen thinks *x*. Felicia does not agree. Homework Help ✎

Use various values of

*x*to check whether or not Helen is correct.Try evaluating different numbers. Be sure to include positive numbers, negative numbers and fractions.

Write an accurate expression for

. If both

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