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人気のある代数 >

9.81x^2-10x-88.2=0

解

9.81 x^{2} - 10 x - 88.2 = 0

解

x = \frac{2 ( 250 + 2225605 )}{981}, x = \frac{2 ( 250 - 2225605 )}{981}

+1

十進法表記

x = 3.55116 \dots, x = - 2.53179 \dots

解答ステップ

9.81 x^{2} - 10 x - 88.2 = 0

以下で両辺を乗じる:

100

981 x^{2} - 1000 x - 8820 = 0

解くとthe二次式

x_{1, 2} = \frac{- ( - 1000 ) \pm ( - 1000 ) ^{2} - 4 \cdot 981 ( - 8820 )}{2 \cdot 981}

(- 1000)^{2} - 4 \cdot 981 (- 8820) = 42225605

x_{1, 2} = \frac{- ( - 1000 ) \pm 4 2225605}{2 \cdot 981}

解を分離する

x_{1} = \frac{- ( - 1000 ) + 4 2225605}{2 \cdot 981}, x_{2} = \frac{- ( - 1000 ) - 4 2225605}{2 \cdot 981}

x = \frac{- ( - 1000 ) + 4 2225605}{2 \cdot 981} : \frac{2 ( 250 + 2225605 )}{981}

x = \frac{- ( - 1000 ) - 4 2225605}{2 \cdot 981} : \frac{2 ( 250 - 2225605 )}{981}

二次equationの解:

x = \frac{2 ( 250 + 2225605 )}{981}, x = \frac{2 ( 250 - 2225605 )}{981}

グラフ

人気の例

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