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-ax+a+5=0

解

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

解

x = \frac{a + a ^{2} - 4 ( a + 5 )}{2}, x = \frac{a - a ^{2} - 4 ( a + 5 )}{2}

解答ステップ

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

解くとthe二次式

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

簡素化

(- a)^{2} - 4 \cdot 1 \cdot (a + 5) : a^{2} - 4 (a + 5)

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

解を分離する

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

x = \frac{- ( - a ) + a ^{2} - 4 ( a + 5 )}{2 \cdot 1} : \frac{a + a ^{2} - 4 ( a + 5 )}{2}

x = \frac{- ( - a ) - a ^{2} - 4 ( a + 5 )}{2 \cdot 1} : \frac{a - a ^{2} - 4 ( a + 5 )}{2}

二次equationの解:

x = \frac{a + a ^{2} - 4 ( a + 5 )}{2}, x = \frac{a - a ^{2} - 4 ( a + 5 )}{2}

グラフ

人気の例

5 x^{2} = - 11

- 4 x^{2} + 32 x - 64 = 0

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

completesquare x^2+8x-10

co m pl e t es q u a re x^{2} + 8 x - 10

3 x^{2} = 1 - 2 x