-4|U+5|=-40

Lösung

- 4 ∣ U + 5 ∣ = - 40

U = - 15 or U = 5

Schritte zur Lösung

- 4 ∣ U + 5 ∣ = - 40

Teile beide Seiten durch

- 4

∣ U + 5 ∣ = 10

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

U + 5 = - 10 or U + 5 = 10

U + 5 = - 10 or U + 5 = 10

U = - 15 or U = 5

x ∣ x + 4 ∣ + 8 = 4

∣ x - 1 ∣ = 3 x + 2

4 = ∣ 2 (x + 5) - 3 ∣

∣ 7 x + 1 ∣ = 3

∣ - 7 x ∣ = 7