2a^2=25

Lösung

2 a^{2} = 25

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

Dezimale

a = 3.53553 \dots, a = - 3.53553 \dots

Schritte zur Lösung

2 a^{2} = 25

Teile beide Seiten durch

2

a^{2} = \frac{25}{2}

Für

x^{2} = f (a)

sind die Lösungen

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

a = \frac{25}{2}, a = - \frac{25}{2}

\frac{25}{2} = \frac{5}{2}

- \frac{25}{2} = - \frac{5}{2}

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

z^{2} = 90

z^{2} = 9 z

x^{2} - 40 x + 359 = 0

z^{2} = - 7

x (x + 2) = - 17