4=|r+2|

Lösung

4 = ∣ r + 2 ∣

r = - 6 or r = 2

Schritte zur Lösung

4 = ∣ r + 2 ∣

Tausche die Seiten

∣ r + 2 ∣ = 4

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

r + 2 = - 4 or r + 2 = 4

r + 2 = - 4 or r + 2 = 4

r = - 6 or r = 2

∣ 9 n - 3 ∣ + 17 = 1

x^{2} + 3 x - 11 = ∣ x + 4 ∣ + 9

3 ∣ x - 5 ∣ = 7

3 ∣ x - 5 ∣ = 8

∣ 10 x + 3 ∣ + 9 = - 58