|x^2-4x-5|=5

Lösung

x^{2} - 4 x - 5 = 5

x = 2 - 14 or x = 0 or x = 4 or x = 2 + 14

Dezimale

x = - 1.74165 \dots, x = 0, x = 4, x = 5.74165 \dots

Schritte zur Lösung

x^{2} - 4 x - 5 = 5

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

x^{2} - 4 x - 5 = - 5 or x^{2} - 4 x - 5 = 5

x^{2} - 4 x - 5 = - 5 or x^{2} - 4 x - 5 = 5

(x = 0 or x = 4) or (x = 2 - 14 or x = 2 + 14)

x = 2 - 14 or x = 0 or x = 4 or x = 2 + 14

- 4 ∣ 5 - 2 n ∣ = - 12

3 ∣ 2 x - 5 ∣ - 4 = - 1

∣ - 3 n - 4 ∣ = 17

10 - 2 ∣ x - 3 ∣ = 3

∣ x - 92.95 ∣ = 1.55