|2x-7|=9

Lösung

∣ 2 x - 7 ∣ = 9

x = - 1 or x = 8

Schritte zur Lösung

∣ 2 x - 7 ∣ = 9

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

2 x - 7 = - 9 or 2 x - 7 = 9

2 x - 7 = - 9 or 2 x - 7 = 9

x = - 1 or x = 8

s im pl i f y (3 x^{- 7}) (5 x^{4})

25 x^{2} + 40 x + 16 = 0

10 x = 90

2 x + 4 > 0

8 x - 7 = 15 + 19 x