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Beliebt Algebra >

5x^3+7x^2-20x-28=0

Lösung

5 x^{3} + 7 x^{2} - 20 x - 28 = 0

Lösung

x = - \frac{7}{5}, x = - 2, x = 2

+1

Dezimale

x = - 1.4, x = - 2, x = 2

Schritte zur Lösung

5 x^{3} + 7 x^{2} - 20 x - 28 = 0

Faktorisiere

5 x^{3} + 7 x^{2} - 20 x - 28 : (5 x + 7) (x + 2) (x - 2)

(5 x + 7) (x + 2) (x - 2) = 0

Anwendung des Nullfaktorprinzips: Wenn

ab = 0

dann

a = 0

oder

b = 0

5 x + 7 = 0 or x + 2 = 0 or x - 2 = 0

Löse

5 x + 7 = 0 : x = - \frac{7}{5}

Löse

x + 2 = 0 : x = - 2

Löse

x - 2 = 0 : x = 2

Die Lösungen sind

x = - \frac{7}{5}, x = - 2, x = 2

Graph

Beliebte Beispiele

3 x^{3} - 6 x^{2} = 0

x^{5} x - 6 = 39

(x + 2) (x - 1)^{2} = 2

x0.12x^2+40x-32=0

x 0.12 x^{2} + 40 x - 32 = 0

1.035=(1+r/4)^4

1.035 = (1 + \frac{r}{4})^{4}