Question

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raves de formula general resuelve ycomprueba
(x-2)²+2=x​

Answer 1

Respuesta:

S = { 2, 3}

Explicación paso a paso:

(x - 2)² + 2 = x​

(x - 2)² = x - 2

x - 2 ≥ 0

x ≥ 2

(x - 2)² = x - 2

(x -2)² - (x - 2) = 0

x² - 4x + 4 - x + 2 = 0

x² - 5x + 6 = 0

Δ = (-5)² - 4.1.6

Δ = 25 - 24

Δ = 1

x = (5 - 1)/2 = 4/2 = 2

ou x = (5 + 1)/2

x = 6/2 = 3