Question

What is the solution of |x-4| < 13

Answer 1

- 9 < x < 17

Explanation:

An inequality of the type | x | < a , always have a solution of the form

- a < x < a

This can be extended to include expressions in the absolute value, that is

- 13 < x - 4 < 13 ( add 4 to each of the 3 intervals )

- 9 < x > 17