4|x+5|=28

Lösung

4 ∣ x + 5 ∣ = 28

x = - 12 or x = 2

Schritte zur Lösung

4 ∣ x + 5 ∣ = 28

Teile beide Seiten durch

4

∣ x + 5 ∣ = 7

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

x + 5 = - 7 or x + 5 = 7

x + 5 = - 7 or x + 5 = 7

x = - 12 or x = 2

x^{2} - 8 = 4

2 ∣ 4 x - 3 ∣ - 8 = - 3

∣ x + 7 ∣ = 27

∣ 3 x + 1 ∣ = 6 x + 2

∣ x ∣ - x = 0