sanjivnisingh2 sanjivnisingh2

11-07-2022
Mathematics

contestada

12. a) Solve the following|x-1|<2.

Respuesta :

jimthompson5910 jimthompson5910

11-07-2022

Answer: -1 < x < 3

Work Shown:

| x-1 | < 2

-2 < x-1 < 2 ... see note1 below

-2+1 < x-1+1 < 2+1 ... see note2

-1 < x < 3

Note1: use the rule that |x| < k turns into -k < x < k for some positive real number k.
Note2: Add 1 to all sides to isolate x

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