|4x+8|=20

Lösung

∣ 4 x + 8 ∣ = 20

x = - 7 or x = 3

Schritte zur Lösung

∣ 4 x + 8 ∣ = 20

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

4 x + 8 = - 20 or 4 x + 8 = 20

4 x + 8 = - 20 or 4 x + 8 = 20

x = - 7 or x = 3

0 = ∣ x - 2 ∣ - 1

∣ x + 3 ∣ = 4 x - 1

∣ u ∣ + 11 = 15

4 ∣ 2 - r ∣ - 2 = 18

∣ 3 x - 9 ∣ = 9