But in this case, it is not just the square root of a number. It is the square root of the square of a number. So the resultant value after the square has to be positive,

No vote yet

1 vote

×

Problem Loading...

Note Loading...

Set Loading...

## Comments

Sort by:

TopNewestWhat is your question? – Pi Han Goh · 1 year, 10 months ago

Log in to reply

– 이채 린 · 1 year, 10 months ago

oh it wasn't a question but I do want to know if it is valid or not.Log in to reply

So the resultant value is non-negative, and not always positive, take \(x=0\) as an example. – Pi Han Goh · 1 year, 10 months ago

Log in to reply