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

1-75.

Helen thinks

Use various values of

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

Find an accurate expression for

. If both

andgive you the same value, , how can we alter Helen's statement to make it true?