Question

Calcule as raízes de
X² - 4x + 4=0

Answer 1

Explicação passo-a-passo:

x² - 4x + 4 = 0

a= 1; b = -4; c = 4

Δ = (-4)² - 4 . 1 . 4

Δ = 16 - 16

Δ = 0

x = (-b ± √Δ)/2a

x = ( - (-4) ± √0)/2 . 1

x = (4 ± 0)/2

x' = (4 + 0)/2

x' = (4)/2

x' = 2

x'' = (4 - 0)/ 2

x = 4/ 2

x'' = 2

S = {(2, 2)}