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人気のある代数 >

266=0.68100X*1.79(7.2-0.4X)

解

266 = 0.68 \cdot 100 \cdot X \cdot 1.79 \cdot (7.2 - 0.4 \cdot X)

解

X = \frac{876.384 - 716244.883456}{97.376}, X = \frac{876.384 + 716244.883456}{97.376}

+1

十進法表記

X = 0.30881 \dots, X = 17.69118 \dots

解答ステップ

266 = 0.68 \cdot 100 X \cdot 1.79 (7.2 - 0.4 X)

拡張

0.68 \cdot 100 X \cdot 1.79 (7.2 - 0.4 X) : 876.384 X - 48.688 X^{2}

266 = 876.384 X - 48.688 X^{2}

辺を交換する

876.384 X - 48.688 X^{2} = 266

266

を左側に移動します

876.384 X - 48.688 X^{2} - 266 = 0

標準的な形式で書く

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

- 48.688 X^{2} + 876.384 X - 266 = 0

解くとthe二次式

X_{1, 2} = \frac{- 876.384 \pm 876.38 4 ^{2} - 4 ( - 48.688 ) ( - 266 )}{2 ( - 48.688 )}

876.38 4^{2} - 4 (- 48.688) (- 266) = 716244.883456

X_{1, 2} = \frac{- 876.384 \pm 716244.883456}{2 ( - 48.688 )}

解を分離する

X_{1} = \frac{- 876.384 + 716244.883456}{2 ( - 48.688 )}, X_{2} = \frac{- 876.384 - 716244.883456}{2 ( - 48.688 )}

X = \frac{- 876.384 + 716244.883456}{2 ( - 48.688 )} : \frac{876.384 - 716244.883456}{97.376}

X = \frac{- 876.384 - 716244.883456}{2 ( - 48.688 )} : \frac{876.384 + 716244.883456}{97.376}

二次equationの解:

X = \frac{876.384 - 716244.883456}{97.376}, X = \frac{876.384 + 716244.883456}{97.376}

グラフ

人気の例

0.7x^2-4.2x-0.7=0

0.7 x^{2} - 4.2 x - 0.7 = 0

- 4 x^{2} + 225 = 45

4 x^{2} + 4 (2 x + 1) = 0

- x^{2} - 56 = 0

0 = - 3 x^{2} + 2 x + 1