20=|-2+2c|

Lösung

20 = ∣ - 2 + 2 c ∣

c = - 9 or c = 11

Schritte zur Lösung

20 = ∣ - 2 + 2 c ∣

Tausche die Seiten

∣ - 2 + 2 c ∣ = 20

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

- 2 + 2 c = - 20 or - 2 + 2 c = 20

- 2 + 2 c = - 20 or - 2 + 2 c = 20

c = - 9 or c = 11

∣ 6 a + 9 ∣ + 1 = 4

2 - 5 ∣ 4 x - 10 ∣ = - 43

∣ 10 b ∣ = 10

∣ b - 2 ∣ = 5

2 x^{2} + 1 = 4 x + 7