|x+4|=8

Lösung

∣ x + 4 ∣ = 8

x = - 12 or x = 4

Schritte zur Lösung

∣ x + 4 ∣ = 8

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

x + 4 = - 8 or x + 4 = 8

x + 4 = - 8 or x + 4 = 8

x = - 12 or x = 4

4 x^{2} + 21 x + 5 = 0

\frac{1}{x + 3} > \frac{1}{4}

x^{2} - x + \frac{1}{4} = 0

∣ x ∣ \geq 7

- 3 (m - 2) + 9 (m + 5) = 8 m + 31