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人気のある代数 >

-4x^2-x+1=0

解

- 4 x^{2} - x + 1 = 0

解

x = - \frac{1 + 17}{8}, x = \frac{17 - 1}{8}

+1

十進法表記

x = - 0.64038 \dots, x = 0.39038 \dots

解答ステップ

- 4 x^{2} - x + 1 = 0

解くとthe二次式

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

(- 1)^{2} - 4 (- 4) \cdot 1 = 17

x_{1, 2} = \frac{- ( - 1 ) \pm 17}{2 ( - 4 )}

解を分離する

x_{1} = \frac{- ( - 1 ) + 17}{2 ( - 4 )}, x_{2} = \frac{- ( - 1 ) - 17}{2 ( - 4 )}

x = \frac{- ( - 1 ) + 17}{2 ( - 4 )} : - \frac{1 + 17}{8}

x = \frac{- ( - 1 ) - 17}{2 ( - 4 )} : \frac{17 - 1}{8}

二次equationの解:

x = - \frac{1 + 17}{8}, x = \frac{17 - 1}{8}

グラフ

人気の例

13 x^{2} + 39 = 0

x^{2} - 12 x = - 18

(2x+1)^2-(3x+5)(2x-1)+3(x^2+3x-4)=2x-1

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