Answer:
[tex](-\infty,\infty)[/tex]
Step-by-step explanation:
We have been given an inequality [tex]x^2\geq -4[/tex]
We know that when 'n' is even for [tex]u^n\geq 0[/tex], then solution is all values of u.
Since x is raised to second power, so it is even.
Therefore, the solution for our given inequality is all values of x that is [tex](-\infty,\infty)[/tex].
