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人気のある代数 >

-3x^2+7x+4=0

解

- 3 x^{2} + 7 x + 4 = 0

解

x = - \frac{- 7 + 97}{6}, x = \frac{7 + 97}{6}

+1

十進法表記

x = - 0.47480 \dots, x = 2.80814 \dots

解答ステップ

- 3 x^{2} + 7 x + 4 = 0

解くとthe二次式

x_{1, 2} = \frac{- 7 \pm 7 ^{2} - 4 ( - 3 ) \cdot 4}{2 ( - 3 )}

7^{2} - 4 (- 3) \cdot 4 = 97

x_{1, 2} = \frac{- 7 \pm 97}{2 ( - 3 )}

解を分離する

x_{1} = \frac{- 7 + 97}{2 ( - 3 )}, x_{2} = \frac{- 7 - 97}{2 ( - 3 )}

x = \frac{- 7 + 97}{2 ( - 3 )} : - \frac{- 7 + 97}{6}

x = \frac{- 7 - 97}{2 ( - 3 )} : \frac{7 + 97}{6}

二次equationの解:

x = - \frac{- 7 + 97}{6}, x = \frac{7 + 97}{6}

グラフ

人気の例

p^{2} + 9 = 0

49 x^{2} - 12 = 28 x

10 - 6 x^{2} = - 11

completesquare 2x^2-x-15

co m pl e t es q u a re 2 x^{2} - x - 15

2x^2-5=3x^2-12x+31

2 x^{2} - 5 = 3 x^{2} - 12 x + 31