|2x+2|=20

Lösung

∣ 2 x + 2 ∣ = 20

x = - 11 or x = 9

Schritte zur Lösung

∣ 2 x + 2 ∣ = 20

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

2 x + 2 = - 20 or 2 x + 2 = 20

2 x + 2 = - 20 or 2 x + 2 = 20

x = - 11 or x = 9

∣ x - 1 ∣ = x + 1

∣ - 3 x - 5 ∣ = 8

\frac{3}{2} = ∣ x + 2 ∣

∣ 10 x - 9 ∣ = 21

4 ∣ 7 w + 14 ∣ = 28