Question

Please confirm my answer? Click for attached

Answer 1

To be correct if \[(x ^{2}-8)\ge0\rightarrow ......x \le-3 or x \ge3\]

Answer 2

So, both -3 or 3 can be correct, ok?

Answer 3

Thanks! But would the last option be correct? I just don't know

Answer 4

\[\pm3\] ok?

Answer 5

Thanks a lot netlopes1, really appreciate your help