|-2n|=4

Lösung

∣ - 2 n ∣ = 4

n = - 2 or n = 2

Schritte zur Lösung

∣ - 2 n ∣ = 4

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

- 2 n = - 4 or - 2 n = 4

- 2 n = - 4 or - 2 n = 4

n = - 2 or n = 2

2 - (2 x + 4) = ∣ x ∣

2 ∣ 5 w - 7 ∣ + 9 = - 7

∣ 3 r ∣ = 9

∣ 2 x ∣ = x^{2} + 2 x - 5

2 ∣ x - 3 ∣ - 1 = 5