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OpenStudy (anonymous):
the real fourth root of -81?
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OpenStudy (experimentx):
x^4 = -81??
OpenStudy (anonymous):
I think he means ... \[\huge \sqrt[4]{-81}\]
OpenStudy (anonymous):
I don't know that it could be REAL ...
OpenStudy (mertsj):
-81 has no real fourth root
OpenStudy (experimentx):
no thats no way real.
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OpenStudy (mertsj):
Perhaps you meant \[ x^4=81\]
OpenStudy (anonymous):
@keiko are you there? ... say something , how do you mean ?
OpenStudy (mertsj):
in which case, x=3 or -3
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