A student solved the equation x^2-6x+6=0 by completing the square. Move numbers to the lines to complete the student's calculation. x^2-6x+6=0 (x^2-6x+underline ( ))+underline ( )+6=0 (x-3)^2=underline ( ) x-3=pm underline ( ) x=underline ( )+underline ( )and x=underline ( )+underline ( )