-3x^2=21

Lösung

- 3 x^{2} = 21

x = 7 i, x = - 7 i

Schritte zur Lösung

- 3 x^{2} = 21

Teile beide Seiten durch

- 3

x^{2} = - 7

Für

x^{2} = f (a)

sind die Lösungen

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

x = - 7, x = - - 7

- 7 = 7 i

- - 7 = - 7 i

x = 7 i, x = - 7 i

f a c t or x^{2} - 11 x = - 30

4 x^{2} + 1.2 x = 0

roo t s x^{2} + 15 x + 50

12 x^{2} + 12 x + 9 = 0

5 y^{2} + 13 y + 6 = 0