de

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Beliebt Algebra >

completesquare x^2+x+8

Lösung

vervollständige das quadrat

x^{2} + x + 8

Lösung

(x + \frac{1}{2})^{2} + \frac{31}{4}

Schritte zur Lösung

x^{2} + x + 8

Schreibe

x^{2} + x + 8

in dieser Form:

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

2 a = 1 : a = \frac{1}{2}

Addiere und subtrahiere

(\frac{1}{2})^{2}

x^{2} + x + 8 + (\frac{1}{2})^{2} - (\frac{1}{2})^{2}

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

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

(x + \frac{1}{2})^{2} + 8 - (\frac{1}{2})^{2}

Vereinfache

(x + \frac{1}{2})^{2} + \frac{31}{4}

Graph

Beliebte Beispiele

3 x^{2} = 2 x + 5

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

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

-5x^2-30x-405=0

- 5 x^{2} - 30 x - 405 = 0

x^{2} - 3 x = 6.75