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 >

-3x^2+4x+5=0

解

- 3 x^{2} + 4 x + 5 = 0

解

x = - \frac{- 2 + 19}{3}, x = \frac{2 + 19}{3}

+1

十進法表記

x = - 0.78629 \dots, x = 2.11963 \dots

解答ステップ

- 3 x^{2} + 4 x + 5 = 0

解くとthe二次式

x_{1, 2} = \frac{- 4 \pm 4 ^{2} - 4 ( - 3 ) \cdot 5}{2 ( - 3 )}

4^{2} - 4 (- 3) \cdot 5 = 219

x_{1, 2} = \frac{- 4 \pm 2 19}{2 ( - 3 )}

解を分離する

x_{1} = \frac{- 4 + 2 19}{2 ( - 3 )}, x_{2} = \frac{- 4 - 2 19}{2 ( - 3 )}

x = \frac{- 4 + 2 19}{2 ( - 3 )} : - \frac{- 2 + 19}{3}

x = \frac{- 4 - 2 19}{2 ( - 3 )} : \frac{2 + 19}{3}

二次equationの解:

x = - \frac{- 2 + 19}{3}, x = \frac{2 + 19}{3}

グラフ

人気の例

completesquare x^2-13x

co m pl e t es q u a re x^{2} - 13 x

completesquare x^2-15x

co m pl e t es q u a re x^{2} - 15 x

v^{2} - 8 v + 45 = 0

x^{2} - 12 x = 10

5 x^{2} - 3 x + 5 = 0