-5x^2=-8

Lösung

- 5 x^{2} = - 8

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

Dezimale

x = 1.26491 \dots, x = - 1.26491 \dots

Schritte zur Lösung

- 5 x^{2} = - 8

Teile beide Seiten durch

- 5

x^{2} = \frac{8}{5}

Für

x^{2} = f (a)

sind die Lösungen

x = f (a), - f (a)

x = \frac{8}{5}, x = - \frac{8}{5}

\frac{8}{5} = \frac{2 2}{5}

- \frac{8}{5} = - \frac{2 2}{5}

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

0 = 2 x^{2} - 7 x - 4

p^{2} - 2 = - 9

so l v e f or x, f (x - 2) f = x^{2} + 5

10 = x^{2} - 4 x + 1

b x^{2} + b x - x = 0