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 >

-2x^2+9x+18=0

解

- 2 x^{2} + 9 x + 18 = 0

解

x = - \frac{3}{2}, x = 6

+1

十進法表記

x = - 1.5, x = 6

解答ステップ

- 2 x^{2} + 9 x + 18 = 0

解くとthe二次式

x_{1, 2} = \frac{- 9 \pm 9 ^{2} - 4 ( - 2 ) \cdot 18}{2 ( - 2 )}

9^{2} - 4 (- 2) \cdot 18 = 15

x_{1, 2} = \frac{- 9 \pm 15}{2 ( - 2 )}

解を分離する

x_{1} = \frac{- 9 + 15}{2 ( - 2 )}, x_{2} = \frac{- 9 - 15}{2 ( - 2 )}

x = \frac{- 9 + 15}{2 ( - 2 )} : - \frac{3}{2}

x = \frac{- 9 - 15}{2 ( - 2 )} : 6

二次equationの解:

x = - \frac{3}{2}, x = 6

グラフ

人気の例

4=a(2-h)^2+k,-4=a(-2-h)^2+k,5=a(1-h)^2+k

4 = a (2 - h)^{2} + k, - 4 = a (- 2 - h)^{2} + k, 5 = a (1 - h)^{2} + k

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

2 x^{2} - 9 x = 5 - 4 x

2 m^{2} + 4 m = 0

34=91.966x^2-180.82x+94.588

34 = 91.966 x^{2} - 180.82 x + 94.588