Question 31831
1.   F(0) means you should put "0" in place of "x".
     F(0)=0^2-2(0)+1 = 1

2.   If F(x)=0, the x^2-2x+1=0
     (x-1)^2=0
     Therefore x= 1 and x=1  (1 is a double-root)
Cheers,
stan H.