20^2+25^2=x^2

Lösung

2 0^{2} + 2 5^{2} = x^{2}

x = 541, x = - 541

Dezimale

x = 32.01562 \dots, x = - 32.01562 \dots

Schritte zur Lösung

2 0^{2} + 2 5^{2} = x^{2}

Tausche die Seiten

x^{2} = 2 0^{2} + 2 5^{2}

Vereinfache

2 0^{2} + 2 5^{2} : 1025

Für

x^{2} = f (a)

sind die Lösungen

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

x = 1025, x = - 1025

1025 = 541

- 1025 = - 541

x = 541, x = - 541

x = 5 x - x^{2}

15 - 2 x = x^{2}

x^{2} - 6 x + d = 0

so l v e f or x, x^{2} = - 9

(2 k - 1) x^{2} + 5 x - 1 = 0