What do we mean by REAL zeroes of a polynomial ? Is there something called 'unreal zeroes' i.e zeroes which are not real ? If so what is the difference between the both??

What do we mean by REAL zeroes of a polynomial ? Is there something c

1.	What do we mean by REAL zeroes of a polynomial ? Is there something called 'unreal zeroes' i.e zeroes which are not real ? If so what is the difference between the both??
Answer» What do we mean by REAL zeroes of a polynomial ? Is there something called 'unreal zeroes' i.e zeroes which are not real ? If so what is the difference between the both??