|x+4|=20

Lösung

∣ x + 4 ∣ = 20

x = - 24 or x = 16

Schritte zur Lösung

∣ x + 4 ∣ = 20

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

x + 4 = - 20 or x + 4 = 20

x + 4 = - 20 or x + 4 = 20

x = - 24 or x = 16

∣ x + 8 ∣ + 7 = 5

∣ 8 x - 3 ∣ + 5 = 5

- 10 - ∣ - 11 - x ∣ = - 15

x^{2} - 10 x + 21 = 0

22 = ∣ x + 10 ∣