|b+4|=5

Lösung

∣ b + 4 ∣ = 5

b = - 9 or b = 1

Schritte zur Lösung

∣ b + 4 ∣ = 5

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

b + 4 = - 5 or b + 4 = 5

b + 4 = - 5 or b + 4 = 5

b = - 9 or b = 1

∣ x - 2 ∣ = - 1

∣ x - 2 ∣ = - 4

∣ 2 a - 15 ∣ = 77

(x - 2)^{2} + ∣ x - 2 ∣ - 2 = 0

- 2 ∣ x + 3 ∣ - 4 = - 8