the question is attached above.
 Please send the complete solution step by step.

Asked by sudhanshubhushanroy | 20th Nov, 2017, 08:17: AM

Expert Answer:

begin mathsize 16px style straight b squared minus 4 ac less than 0
ie comma
straight b squared plus 8 ac less than 0 space for space the space given space equation
straight b squared less than negative 8 ac
since space straight b squared space is space positive
ac less than 0 end style

Answered by Arun | 30th Nov, 2017, 09:51: AM