Why is x>0 ??

https://brilliant.org/curriculum-mathematics-problem/algebra-and-trigonometry-problem-5546/

in this question why did he write a condition that x is more than zero in the beginning ....i mean x can be a negative or positive number it doesn't matter as there's an absolute!!

#Algebra #AbsoluteValue #Question

Easy Math Editor

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`2 \times 3`	$2 \times 3$
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Math	Appears as
Remember to wrap math in `\(` ... `\)` or `\[` ... `\]` to ensure proper formatting.
`2 \times 3`	$2 \times 3$
`2^{34}`	$2^{34}$
`a_{i-1}`	$a_{i-1}$
`\frac{2}{3}`	$\frac{2}{3}$
`\sqrt{2}`	$\sqrt{2}$
`\sum_{i=1}^3`	$\sum_{i=1}^3$
`\sin \theta`	$\sin \theta$
`\boxed{123}`	$\boxed{123}$