|x^2-4x-18|=3

Lösung

x^{2} - 4 x - 18 = 3

x = - 3 or x = 2 - 19 or x = 2 + 19 or x = 7

Dezimale

x = - 3, x = - 2.35889 \dots, x = 6.35889 \dots, x = 7

Schritte zur Lösung

x^{2} - 4 x - 18 = 3

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

x^{2} - 4 x - 18 = - 3 or x^{2} - 4 x - 18 = 3

x^{2} - 4 x - 18 = - 3 or x^{2} - 4 x - 18 = 3

(x = 2 - 19 or x = 2 + 19) or (x = - 3 or x = 7)

x = - 3 or x = 2 - 19 or x = 2 + 19 or x = 7

∣ - x ∣ = - 3

57 = ∣ b - 8 ∣

∣ 7 + 5 x ∣ = 8

∣ 16 - x ∣ = 72

∣ 3 r ∣ - 3 = 9