How do i write a quadratic equation with only one nonzero root?

 

   how do I write a quadratic equation with only one nonzero root?     

 

   Make both terms the same.   examples:   (x – 5)(x – 5)  =  x² – 10x + 25     

                                                                     (x + 8)(x + 8)  =  x² + 16x + 64     

 

   I think it's just semantics whether you say there's only      

   one root, or say there are two roots that are the same.     

   ^.