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人気のある代数 >

-5x^2+3x+1=0

解

- 5 x^{2} + 3 x + 1 = 0

解

x = - \frac{- 3 + 29}{10}, x = \frac{3 + 29}{10}

+1

十進法表記

x = - 0.23851 \dots, x = 0.83851 \dots

解答ステップ

- 5 x^{2} + 3 x + 1 = 0

解くとthe二次式

x_{1, 2} = \frac{- 3 \pm 3 ^{2} - 4 ( - 5 ) \cdot 1}{2 ( - 5 )}

3^{2} - 4 (- 5) \cdot 1 = 29

x_{1, 2} = \frac{- 3 \pm 29}{2 ( - 5 )}

解を分離する

x_{1} = \frac{- 3 + 29}{2 ( - 5 )}, x_{2} = \frac{- 3 - 29}{2 ( - 5 )}

x = \frac{- 3 + 29}{2 ( - 5 )} : - \frac{- 3 + 29}{10}

x = \frac{- 3 - 29}{2 ( - 5 )} : \frac{3 + 29}{10}

二次equationの解:

x = - \frac{- 3 + 29}{10}, x = \frac{3 + 29}{10}

グラフ

人気の例

x^{2} - 24 x + 81 = 0

x^2+(13-x)^2=109

x^{2} + (13 - x)^{2} = 109

x^{2} + 4 x = - 11

3 x^{2} = 18 \frac{3}{4}

(2x+3)(x+1)=(x+2)(x-1)+2

(2 x + 3) (x + 1) = (x + 2) (x - 1) + 2