-4|x-4|=-20

Lösung

- 4 ∣ x - 4 ∣ = - 20

x = - 1 or x = 9

Schritte zur Lösung

- 4 ∣ x - 4 ∣ = - 20

Teile beide Seiten durch

- 4

∣ x - 4 ∣ = 5

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

x - 4 = - 5 or x - 4 = 5

x - 4 = - 5 or x - 4 = 5

x = - 1 or x = 9

4 ∣ x ∣ + 3 = 0

8 - ∣ k + 5 ∣ = - 4

∣ y + 8 ∣ = - 5

∣ 8 - 4 x ∣ - 7 = 9

∣ r ∣ - 6 = - 1