How to solve
|u| = a (a ≥ 0) means u = a or u = −a. Solve both linear cases.
Steps
- Write the two equations without absolute value.
- Solve each; list both solutions in order.
Example
|x − 3| = 5
- x − 3 = 5 or x − 3 = −5.
- x = 8 or x = −2.
Answer: -2,8
How to type answers
- Enter a,b with a ≤ b
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