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人気のある代数 >

-12x^2-42x=0

解

- 12 x^{2} - 42 x = 0

解

x = - \frac{7}{2}, x = 0

+1

十進法表記

x = - 3.5, x = 0

解答ステップ

- 12 x^{2} - 42 x = 0

解くとthe二次式

x_{1, 2} = \frac{- ( - 42 ) \pm ( - 42 ) ^{2} - 4 ( - 12 ) \cdot 0}{2 ( - 12 )}

(- 42)^{2} - 4 (- 12) \cdot 0 = 42

x_{1, 2} = \frac{- ( - 42 ) \pm 42}{2 ( - 12 )}

解を分離する

x_{1} = \frac{- ( - 42 ) + 42}{2 ( - 12 )}, x_{2} = \frac{- ( - 42 ) - 42}{2 ( - 12 )}

x = \frac{- ( - 42 ) + 42}{2 ( - 12 )} : - \frac{7}{2}

x = \frac{- ( - 42 ) - 42}{2 ( - 12 )} : 0

二次equationの解:

x = - \frac{7}{2}, x = 0

グラフ

人気の例

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