Question

the real fourth root of -81?

Answer 1

x^4 = -81??

Answer 2

I think he means ...
\[\huge \sqrt[4]{-81}\]

Answer 3

I don't know that it could be REAL ...

Answer 4

-81 has no real fourth root

Answer 5

no thats no way real.

Answer 6

Perhaps you meant
\[ x^4=81\]

Answer 7

@keiko are you there? ... say something , how do you mean ?

Answer 8

in which case, x=3 or -3