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人気のある代数 >

(13x-1)^2-4(13x-1)-5=0

解

(13 x - 1)^{2} - 4 (13 x - 1) - 5 = 0

解

x = \frac{6}{13}, x = 0

+1

十進法表記

x = 0.46153 \dots, x = 0

解答ステップ

(13 x - 1)^{2} - 4 (13 x - 1) - 5 = 0

拡張

(13 x - 1)^{2} - 4 (13 x - 1) - 5 : 169 x^{2} - 78 x

169 x^{2} - 78 x = 0

解くとthe二次式

x_{1, 2} = \frac{- ( - 78 ) \pm ( - 78 ) ^{2} - 4 \cdot 169 \cdot 0}{2 \cdot 169}

(- 78)^{2} - 4 \cdot 169 \cdot 0 = 78

x_{1, 2} = \frac{- ( - 78 ) \pm 78}{2 \cdot 169}

解を分離する

x_{1} = \frac{- ( - 78 ) + 78}{2 \cdot 169}, x_{2} = \frac{- ( - 78 ) - 78}{2 \cdot 169}

x = \frac{- ( - 78 ) + 78}{2 \cdot 169} : \frac{6}{13}

x = \frac{- ( - 78 ) - 78}{2 \cdot 169} : 0

二次equationの解:

x = \frac{6}{13}, x = 0

グラフ

人気の例

- 2 a^{2} = 72

3 x^{2} - 60 x + 100 = 0

6 x^{2} + 23 x = - 7

y^{2} - y - 2 y = 0

solvefor x,y^2-x^2+1=50

so l v e f or x, y^{2} - x^{2} + 1 = 50