3|x+2|=9

Lösung

3 ∣ x + 2 ∣ = 9

x = - 5 or x = 1

Schritte zur Lösung

3 ∣ x + 2 ∣ = 9

Teile beide Seiten durch

3

∣ x + 2 ∣ = 3

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

x + 2 = - 3 or x + 2 = 3

x + 2 = - 3 or x + 2 = 3

x = - 5 or x = 1

3 ∣ x + 2 ∣ = 2

3 ∣ x + 2 ∣ = 0

∣ 4 f + 1 ∣ = 7

∣ 2 x - 6 ∣ = - 11

∣ x - 3 ∣ + 7 = 6