Question

x^2-2x+1=0 alguém sabe

Answer 1

Dani,

x² - 2x + 1 = 0

a = 1
b = -2
c = 1

Δ = b² - 4.a.c
Δ = (-2)² - 4.1.1
Δ = 4 - 4
Δ = 0

Como Δ = 0, resolvemos:

x = -b/2a
x = -(-2)/2.1
x = 2/2
x = 1

S = {0, 1}