The coordintes of the vertices of a square of unit area are the roots of the equation and the coordinates of the vertices are the roots of the equation . Then the possible vertices of the square is/are 

a) 

b) 

c) 

d) 
The coordintes of the vertices of a square of unit area are the roots of the equation and the coordinates of the vertices are the roots of the equation . Then the possible vertices of the square is/are 

a) 

b) 

c) 

d) 
(a,b)
From the figure two such squares are possible whose coordinates are and