de

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Beliebt Algebra >

completesquare 2x^2+4x-1

Lösung

vervollständige das quadrat

2 x^{2} + 4 x - 1

Lösung

2 (x + 1)^{2} - 3

Schritte zur Lösung

2 x^{2} + 4 x - 1

Schreibe

2 x^{2} + 4 x - 1

in dieser Form:

x^{2} + 2 a x + a^{2}

Klammere aus

2

2 (x^{2} + 2 x - \frac{1}{2})

2 a = 2 : a = 1

Addiere und subtrahiere

1^{2}

2 (x^{2} + 2 x - \frac{1}{2} + 1^{2} - 1^{2})

x^{2} + 2 a x + a^{2} = (x + a)^{2}

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

2 ((x + 1)^{2} - \frac{1}{2} - 1^{2})

Vereinfache

2 (x + 1)^{2} - 3

Graph

Beliebte Beispiele

solvefor x,v+w=x^2yz

so l v e f or x, v + w = x^{2} yz

(x - 1) (x + 1) = 1

9 x^{2} = 225

solvefor x,x^2-kx+24=0

so l v e f or x, x^{2} - k x + 24 = 0

\frac{25}{169} = b^{2}