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人気のある代数 >

x^2-100x+1000=0

解

x^{2} - 100 x + 1000 = 0

解

x = 10 (5 + 15), x = 10 (5 - 15)

+1

十進法表記

x = 88.72983 \dots, x = 11.27016 \dots

解答ステップ

x^{2} - 100 x + 1000 = 0

解くとthe二次式

x_{1, 2} = \frac{- ( - 100 ) \pm ( - 100 ) ^{2} - 4 \cdot 1 \cdot 1000}{2 \cdot 1}

(- 100)^{2} - 4 \cdot 1 \cdot 1000 = 2015

x_{1, 2} = \frac{- ( - 100 ) \pm 20 15}{2 \cdot 1}

解を分離する

x_{1} = \frac{- ( - 100 ) + 20 15}{2 \cdot 1}, x_{2} = \frac{- ( - 100 ) - 20 15}{2 \cdot 1}

x = \frac{- ( - 100 ) + 20 15}{2 \cdot 1} : 10 (5 + 15)

x = \frac{- ( - 100 ) - 20 15}{2 \cdot 1} : 10 (5 - 15)

二次equationの解:

x = 10 (5 + 15), x = 10 (5 - 15)

グラフ

人気の例

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