|k+1|=2

Lösung

∣ k + 1 ∣ = 2

k = - 3 or k = 1

Schritte zur Lösung

∣ k + 1 ∣ = 2

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

k + 1 = - 2 or k + 1 = 2

k + 1 = - 2 or k + 1 = 2

k = - 3 or k = 1

∣ b + 9 ∣ - 3 = 3

2 ∣ b + 7 ∣ = 20

so l v e f or x, ∣ x - 10 ∣ = 3

∣ 2 x - 109 ∣ = 731

3 ∣ 2 - x ∣ + 1 = 7