Question

raizes da equaçao ײ-2×+1=0 sao ?"

Answer 1

Olá Millah,

x²-2x+1=0 

Δ= b² -4ac
Δ = (-2)² - 4 . 1 . 1
Δ = +4 - 4
Δ  = 0

x = –b ± √0 /2a 
x= -(-2) ± 0 / 2.1
x = 2 ± 0 /2

x¹= 2+0/2
x¹=2/2
x¹= 1.

x²=2-0/2
x²=2/2
x²=1.

S={1,1}.

Espero ter ajudado!