|x-9|=12

Lösung

∣ x - 9 ∣ = 12

x = - 3 or x = 21

Schritte zur Lösung

∣ x - 9 ∣ = 12

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

x - 9 = - 12 or x - 9 = 12

x - 9 = - 12 or x - 9 = 12

x = - 3 or x = 21

s im pl i f y \frac{10}{20}

s im pl i f y (\frac{i}{n})^{2}

6 x^{2} + 22 x - 40 = 0

- 2 < x < 7

f a c t or 12 b^{2} - 44 b + 35