Answer:
[tex]=\pm i\sqrt{66}[/tex]
Step-by-step explanation:
So we have:
[tex]\pm\sqrt{-66}[/tex]
This is the same as:
[tex]=\pm\sqrt{66\cdot-1}[/tex]
Separate:
[tex]=\pm\sqrt{66}\cdot\sqrt{-1}[/tex]
Replace the second term with i:
[tex]=\pm i\sqrt{66}[/tex]
The square root of 66 cannot be simplified.
So, this is our answer :)
