Question

xelevado a 2 - 2x + 1

Answer 1

x² - 2x + 1 = 0

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

Δ = b² - 4ac
Δ = (-2)² - 4.1.1
Δ = 4 - 4
Δ = 0    (uma raiz)

x = - b +/- √Δ  = - ( - 2) +/- √0  
           2a                 2.1

x = 2 = 1
      2

R.: x = 1