Question 89364

 Solve by completing the square.  

	x^2 – 16x + 63 = 0
       (x)^2-2*8*x = -63   (splitting  16 = 2*8 , in 2*8*x  ,a =x & b = 8
                              add (8)^2  on both sides)

        (x)^2- 2*x*8+64 = -63+64
         (x)^2-2x8+64 = 1
                (x-8)^2 = 1
         Taking sq rt on both  sides  we get 
                  x-8 = +-sq rt 1

                    x = 8+-sq rt 1  is the required solution