Do radicals always have a +/- sign in front of them?(adsbygoogle = window.adsbygoogle || []).push({});

For example the equation: [tex]y=\sqrt{x}[/tex]

Is that only a half of a sleeping parabola or is it a full one?

Does a radical only have a +/- sign in front of it when it takes this form?:

[tex]y^{2}=x \rightarrow y=\pm \sqrt{x}[/tex]

So, is there a rule that when you square root something the +/- signalwaysgoes in front of it? If you do not square root something, the square rooted term isonlypositive and does not contain the +/- sign?

Thanks in advance.

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# Homework Help: Radicals Do they always have a +/- in front of them?

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