8=|2+4x|

Lösung

8 = ∣ 2 + 4 x ∣

x = - \frac{5}{2} or x = \frac{3}{2}

Dezimale

x = - 2.5, x = 1.5

Schritte zur Lösung

8 = ∣ 2 + 4 x ∣

Tausche die Seiten

∣ 2 + 4 x ∣ = 8

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

2 + 4 x = - 8 or 2 + 4 x = 8

2 + 4 x = - 8 or 2 + 4 x = 8

x = - \frac{5}{2} or x = \frac{3}{2}

2 ∣ x - 3 ∣ + 4 = 8

∣ x ∣ - 18 = - 10

∣ - 8 x ∣ = 64

- 3 = - ∣ k ∣

∣ x + 4 ∣ = x