Level:
Project ID:
9000029305
Source Problem:
Accepted:
1
Clonable:
1
Easy:
1
Find the solution set of the following inequality.
\[
x^{4} + 81\leq 0
\]
\(\emptyset \)
\(0\)
\(\mathbb{R}\setminus \left (-9;9\right )\)
\(\mathbb{R}\)
\(\left (-\infty ;-3\right ] \cup \left [ 3;\infty \right )\)