|x^2+2x|=1

Lösung

x^{2} + 2 x = 1

x = - 1 - 2 or x = - 1 or x = - 1 + 2

Dezimale

x = - 2.41421 \dots, x = - 1, x = 0.41421 \dots

Schritte zur Lösung

x^{2} + 2 x = 1

Wende Absoluteregel an: Wenn

∣ u ∣ = a, a > 0

dann

u = a

u = - a

x^{2} + 2 x = - 1 or x^{2} + 2 x = 1

x^{2} + 2 x = - 1 or x^{2} + 2 x = 1

x = - 1 or (x = - 1 - 2 or x = - 1 + 2)

x = - 1 - 2 or x = - 1 or x = - 1 + 2

f a c t or 3 n^{2} - 8 n - 3

f a c t or 81 a^{4} - 49 b^{2}

x^{2} - 10 x + 100 = 0

\frac{5}{X - 1} < 3

2 v > - 12