The given equation is
This is of the form , where and
.
The given equation will have real and equal roots if .
But, for , we get , which is not true
Hence, 2 is the required value of .
The given equation is
This is of the form , where and
.
The given equation will have real and equal roots if .
But, for , we get , which is not true
Hence, 2 is the required value of .