2=|b+5|

Lösung

2 = ∣ b + 5 ∣

b = - 7 or b = - 3

Schritte zur Lösung

2 = ∣ b + 5 ∣

Tausche die Seiten

∣ b + 5 ∣ = 2

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

b + 5 = - 2 or b + 5 = 2

b + 5 = - 2 or b + 5 = 2

b = - 7 or b = - 3

x^{2} - 1 = 2 x - 2

x^{2} - 1 = 2 x - 1

x^{2} - 1 = 2 x + 1

∣ 6 x - 3 ∣ = - 15

- 4 = - ∣ x - 3 ∣ - 1