ja

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

人気のある代数 >

-x^2-x+7=0

解

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

解

x = - \frac{1 + 29}{2}, x = \frac{29 - 1}{2}

+1

十進法表記

x = - 3.19258 \dots, x = 2.19258 \dots

解答ステップ

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

解くとthe二次式

x_{1, 2} = \frac{- ( - 1 ) \pm ( - 1 ) ^{2} - 4 ( - 1 ) \cdot 7}{2 ( - 1 )}

(- 1)^{2} - 4 (- 1) \cdot 7 = 29

x_{1, 2} = \frac{- ( - 1 ) \pm 29}{2 ( - 1 )}

解を分離する

x_{1} = \frac{- ( - 1 ) + 29}{2 ( - 1 )}, x_{2} = \frac{- ( - 1 ) - 29}{2 ( - 1 )}

x = \frac{- ( - 1 ) + 29}{2 ( - 1 )} : - \frac{1 + 29}{2}

x = \frac{- ( - 1 ) - 29}{2 ( - 1 )} : \frac{29 - 1}{2}

二次equationの解:

x = - \frac{1 + 29}{2}, x = \frac{29 - 1}{2}

グラフ

人気の例

solvefor x,u=x^2+y^2

so l v e f or x, u = x^{2} + y^{2}

3 (x + 2)^{2} - 15 = 0

9 x^{2} - 9 x = 0

7000-2Q=0.1Q^2+2Q+1000

7000 - 2 Q = 0.1 Q^{2} + 2 Q + 1000

12 x - 0.24 x^{2} = 0