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人気のある代数 >

-2x^2+12x-14=0

解

- 2 x^{2} + 12 x - 14 = 0

解

x = 3 - 2, x = 3 + 2

+1

十進法表記

x = 1.58578 \dots, x = 4.41421 \dots

解答ステップ

- 2 x^{2} + 12 x - 14 = 0

解くとthe二次式

x_{1, 2} = \frac{- 12 \pm 1 2 ^{2} - 4 ( - 2 ) ( - 14 )}{2 ( - 2 )}

1 2^{2} - 4 (- 2) (- 14) = 42

x_{1, 2} = \frac{- 12 \pm 4 2}{2 ( - 2 )}

解を分離する

x_{1} = \frac{- 12 + 4 2}{2 ( - 2 )}, x_{2} = \frac{- 12 - 4 2}{2 ( - 2 )}

x = \frac{- 12 + 4 2}{2 ( - 2 )} : 3 - 2

x = \frac{- 12 - 4 2}{2 ( - 2 )} : 3 + 2

二次equationの解:

x = 3 - 2, x = 3 + 2

グラフ

人気の例

0 = - x^{2} + 2

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