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人気のある代数 >

-66.18X^2-2.46X-0.027=-12.5

解

- 66.18 \cdot X^{2} - 2.46 \cdot X - 0.027 = - 12.5

解

X = - \frac{2460 + 3307904160}{132360}, X = \frac{3307904160 - 2460}{132360}

+1

十進法表記

X = - 0.45311 \dots, X = 0.41594 \dots

解答ステップ

- 66.18 X^{2} - 2.46 X - 0.027 = - 12.5

以下で両辺を乗じる:

1000

- 66180 X^{2} - 2460 X - 27 = - 12500

12500

を左側に移動します

- 66180 X^{2} - 2460 X + 12473 = 0

解くとthe二次式

X_{1, 2} = \frac{- ( - 2460 ) \pm ( - 2460 ) ^{2} - 4 ( - 66180 ) \cdot 12473}{2 ( - 66180 )}

(- 2460)^{2} - 4 (- 66180) \cdot 12473 = 3307904160

X_{1, 2} = \frac{- ( - 2460 ) \pm 3307904160}{2 ( - 66180 )}

解を分離する

X_{1} = \frac{- ( - 2460 ) + 3307904160}{2 ( - 66180 )}, X_{2} = \frac{- ( - 2460 ) - 3307904160}{2 ( - 66180 )}

X = \frac{- ( - 2460 ) + 3307904160}{2 ( - 66180 )} : - \frac{2460 + 3307904160}{132360}

X = \frac{- ( - 2460 ) - 3307904160}{2 ( - 66180 )} : \frac{3307904160 - 2460}{132360}

二次equationの解:

X = - \frac{2460 + 3307904160}{132360}, X = \frac{3307904160 - 2460}{132360}

グラフ

人気の例

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