Question

x²-4x+4=0
Aaaa me ajudem!!

Answer 1

x²-4x+4=0

∆= 4²-4.1.4
∆= 16-16
∆=0 (x'=x")

x= 4-0/2
x'=x"= 2

:)

Answer 2

Simplesmente Baskara!
∆= b ² - 4 . a . c
∆ = (-4)² - 4 . 1 . 4
∆= 16 - 16
∆= 0

$x = \ \frac{ - b + - \sqrt{4.a.c} }{2.a}$
-(-4) +-√0/2.1
x1= 4+0/2 = 4/2 = 2
x2= 4-0 /2 = 4/2 = 2