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+10x-25=0

解

2 x^{2} + 10 x - 25 = 0

解

x = \frac{5 ( 3 - 1 )}{2}, x = - \frac{5 ( 1 + 3 )}{2}

+1

十進法表記

x = 1.83012 \dots, x = - 6.83012 \dots

解答ステップ

2 x^{2} + 10 x - 25 = 0

解くとthe二次式

x_{1, 2} = \frac{- 10 \pm 1 0 ^{2} - 4 \cdot 2 ( - 25 )}{2 \cdot 2}

1 0^{2} - 4 \cdot 2 (- 25) = 103

x_{1, 2} = \frac{- 10 \pm 10 3}{2 \cdot 2}

解を分離する

x_{1} = \frac{- 10 + 10 3}{2 \cdot 2}, x_{2} = \frac{- 10 - 10 3}{2 \cdot 2}

x = \frac{- 10 + 10 3}{2 \cdot 2} : \frac{5 ( 3 - 1 )}{2}

x = \frac{- 10 - 10 3}{2 \cdot 2} : - \frac{5 ( 1 + 3 )}{2}

二次equationの解:

x = \frac{5 ( 3 - 1 )}{2}, x = - \frac{5 ( 1 + 3 )}{2}

グラフ

人気の例

(x - 5)^{2} = 11

3x^2-4.4x-6.9=0

3 x^{2} - 4.4 x - 6.9 = 0

(x + 11)^{2} = 121

9^{2} + 2^{2} = c^{2}

2644.6=0.68*2.14*100*x*(9.5-0.4*x)

2644.6 = 0.68 \cdot 2.14 \cdot 100 \cdot x \cdot (9.5 - 0.4 \cdot x)