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OpenStudy (anonymous):
If z is the principal square root of 8, what must be true?
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OpenStudy (unklerhaukus):
\[z^2=8\]
OpenStudy (zarkon):
it must be positive?
OpenStudy (unklerhaukus):
and real?
OpenStudy (anonymous):
and it is equal to \( 2\sqrt{2} \)?
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