<img height="1" width="1" style="display:none" src="https://www.facebook.com/tr?id=539359806247306&ev=PageView&noscript=1"/>

Question

This question was asked in Misc 6
Rishabh Sharma's image

Why is 0 included in the range? There could be only the number √-1 in domain to satisfy this. And √-1 is not possible as x belongs to R