Question

f(x) = x ^ 2 - 2x + 1

Answer 1

F(x) = x ^ 2 - 2x + 1

x^2 - 2x + 1 = 0

a = 1; b = - 2; c = 1

/\ = b^2 - 4ac

/\ = (-2)^2 - 4.1.1

/\ = 4 - 4

/\ = 0

X = - b / 2a

x = - (-2) / 2.1

x = 2/2

x = 1

R.: S = {1}