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Absolute Value
Example 1

Example 1: Absolute Value Equations

Step-by-step worked example for this lesson track.

Problem

Greater solution of x0=1 is ?\text{Greater solution of }|x-0|=1\text{ is }?

1. Recognize Pattern

xh=dx=h±d|x-h|=d\Rightarrow x=h\pm d

2. Apply Method

x4=9x{13,5}|x--4|=9\Rightarrow x\in\left\{-13,5\right\}

3. Conclude

x=0±1x{1,1}x=0\pm1\Rightarrow x\in\left\{-1,1\right\}

Final answer

x=0±1x{1,1}x=0\pm1\Rightarrow x\in\left\{-1,1\right\}