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人気のある代数 >

3x^2-15x+4=0

解

3 x^{2} - 15 x + 4 = 0

解

x = \frac{15 + 177}{6}, x = \frac{15 - 177}{6}

+1

十進法表記

x = 4.71735 \dots, x = 0.28264 \dots

解答ステップ

3 x^{2} - 15 x + 4 = 0

解くとthe二次式

x_{1, 2} = \frac{- ( - 15 ) \pm ( - 15 ) ^{2} - 4 \cdot 3 \cdot 4}{2 \cdot 3}

(- 15)^{2} - 4 \cdot 3 \cdot 4 = 177

x_{1, 2} = \frac{- ( - 15 ) \pm 177}{2 \cdot 3}

解を分離する

x_{1} = \frac{- ( - 15 ) + 177}{2 \cdot 3}, x_{2} = \frac{- ( - 15 ) - 177}{2 \cdot 3}

x = \frac{- ( - 15 ) + 177}{2 \cdot 3} : \frac{15 + 177}{6}

x = \frac{- ( - 15 ) - 177}{2 \cdot 3} : \frac{15 - 177}{6}

二次equationの解:

x = \frac{15 + 177}{6}, x = \frac{15 - 177}{6}

グラフ

人気の例

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