|x^2-10x+21|=0

Lösung

x^{2} - 10 x + 21 = 0

x = 3 or x = 7

Schritte zur Lösung

x^{2} - 10 x + 21 = 0

Wende Absoluteregel an: Wenn

∣ u ∣ = 0

dann

u = 0

x^{2} - 10 x + 21 = 0

x^{2} - 10 x + 21 = 0 : x = 7, x = 3

x = 3 or x = 7

22 = ∣ x + 10 ∣

∣ 6 w + 9 ∣ = 3

∣ 5 y - 10 ∣ = 15

∣ - 9 x ∣ = 72

6 - 2 ∣ 4 k + 1 ∣ = - 56