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人気のある代数 >

2644.6=0.682.14100x(9.5-0.4*x)

解

2644.6 = 0.68 \cdot 2.14 \cdot 100 \cdot x \cdot (9.5 - 0.4 \cdot x)

解

x = \frac{1382.44 - 1295392.8464}{116.416}, x = \frac{1382.44 + 1295392.8464}{116.416}

+1

十進法表記

x = 2.09839 \dots, x = 21.65160 \dots

解答ステップ

2644.6 = 0.68 \cdot 2.14 \cdot 100 x (9.5 - 0.4 x)

拡張

0.68 \cdot 2.14 \cdot 100 x (9.5 - 0.4 x) : 1382.44 x - 58.208 x^{2}

2644.6 = 1382.44 x - 58.208 x^{2}

辺を交換する

1382.44 x - 58.208 x^{2} = 2644.6

2644.6

を左側に移動します

1382.44 x - 58.208 x^{2} - 2644.6 = 0

標準的な形式で書く

a x^{2} + b x + c = 0

- 58.208 x^{2} + 1382.44 x - 2644.6 = 0

解くとthe二次式

x_{1, 2} = \frac{- 1382.44 \pm 1382.4 4 ^{2} - 4 ( - 58.208 ) ( - 2644.6 )}{2 ( - 58.208 )}

1382.4 4^{2} - 4 (- 58.208) (- 2644.6) = 1295392.8464

x_{1, 2} = \frac{- 1382.44 \pm 1295392.8464}{2 ( - 58.208 )}

解を分離する

x_{1} = \frac{- 1382.44 + 1295392.8464}{2 ( - 58.208 )}, x_{2} = \frac{- 1382.44 - 1295392.8464}{2 ( - 58.208 )}

x = \frac{- 1382.44 + 1295392.8464}{2 ( - 58.208 )} : \frac{1382.44 - 1295392.8464}{116.416}

x = \frac{- 1382.44 - 1295392.8464}{2 ( - 58.208 )} : \frac{1382.44 + 1295392.8464}{116.416}

二次equationの解:

x = \frac{1382.44 - 1295392.8464}{116.416}, x = \frac{1382.44 + 1295392.8464}{116.416}

グラフ

人気の例

7 (2 x - 5)^{2} + 9 = 52

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X^{2} - 5 X = - 6

12x^2-140x+300=0

12 x^{2} - 140 x + 300 = 0

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