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-3)(x+7)+(x-3)(x-4)=0

解

(x - 3) (x + 7) + (x - 3) (x - 4) = 0

解

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

+1

十進法表記

x = 3, x = - 1.5

解答ステップ

(x - 3) (x + 7) + (x - 3) (x - 4) = 0

拡張

(x - 3) (x + 7) + (x - 3) (x - 4) : 2 x^{2} - 3 x - 9

2 x^{2} - 3 x - 9 = 0

解くとthe二次式

x_{1, 2} = \frac{- ( - 3 ) \pm ( - 3 ) ^{2} - 4 \cdot 2 ( - 9 )}{2 \cdot 2}

(- 3)^{2} - 4 \cdot 2 (- 9) = 9

x_{1, 2} = \frac{- ( - 3 ) \pm 9}{2 \cdot 2}

解を分離する

x_{1} = \frac{- ( - 3 ) + 9}{2 \cdot 2}, x_{2} = \frac{- ( - 3 ) - 9}{2 \cdot 2}

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

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

二次equationの解:

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

グラフ

人気の例

(2x+1)^2=(5x-1)(5x+1)

(2 x + 1)^{2} = (5 x - 1) (5 x + 1)

r^2=(sqrt(3))^2+(-1)^2

r^{2} = (3)^{2} + (- 1)^{2}

0.02(0.5x^2-x)=0,25

0.02 (0.5 x^{2} - x) = 0, 25

x^{2} - 7 x = - 3

5 p^{2} - 14 p = 24