|2x+7|=15

Lösung

∣ 2 x + 7 ∣ = 15

x = - 11 or x = 4

Schritte zur Lösung

∣ 2 x + 7 ∣ = 15

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

2 x + 7 = - 15 or 2 x + 7 = 15

2 x + 7 = - 15 or 2 x + 7 = 15

x = - 11 or x = 4

3 ∣ 2 v - 7 ∣ - 4 = - 1

∣ 7 x + 3 ∣ = 11

x^{2} - 5 x + 5 = 1

∣ x - 2 ∣ - 1 = 5 (x + 3)

∣ 5 x - 3 ∣ = 15