|2n+5|=11

Lösung

∣ 2 n + 5 ∣ = 11

n = - 8 or n = 3

Schritte zur Lösung

∣ 2 n + 5 ∣ = 11

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

2 n + 5 = - 11 or 2 n + 5 = 11

2 n + 5 = - 11 or 2 n + 5 = 11

n = - 8 or n = 3

x = - 3^{2} + 5

3.2 - ∣ 2 + x ∣ = 2.9

- 2 ∣ 4 m - 1 ∣ = - 6

2 ∣ 3 x + 4 ∣ - 8 = - 2 x

∣ x - 3 x + 1 ∣ = 1