Question 435764
  <pre><font face = "Tohoma" size = 4 color = "indigo"><b>
Hi
what are the zeros of the function? 
y=x^2-2x+1    |Note the use of ^ (uppercase 6)
 x^2-2x+1 = 0
factoring
 (x-1)(x-1) = 0   y = (x-1)^2
 (x-1)= 0
 (x-1) = 0  x = 1 is the zero of this function
{{{drawing(300,300,   -6, 6, -6, 6,  blue(line(1,6,1,-6))  , grid(1),
circle(1, 0,0.3),
graph( 300, 300, -6, 6, -6, 6,0,(x-1)^2))}}}