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人気のある代数 >

0.012552x^2+0.666x=12.98

解

0.012552 x^{2} + 0.666 x = 12.98

解

x = \frac{- 0.666 + 1.09525584}{0.025104}, x = \frac{- 0.666 - 1.09525584}{0.025104}

+1

十進法表記

x = 15.15872 \dots, x = - 68.21800 \dots

解答ステップ

0.012552 x^{2} + 0.666 x = 12.98

12.98

を左側に移動します

0.012552 x^{2} + 0.666 x - 12.98 = 0

解くとthe二次式

x_{1, 2} = \frac{- 0.666 \pm 0.66 6 ^{2} - 4 \cdot 0.012552 ( - 12.98 )}{2 \cdot 0.012552}

0.66 6^{2} - 4 \cdot 0.012552 (- 12.98) = 1.09525584

x_{1, 2} = \frac{- 0.666 \pm 1.09525584}{2 \cdot 0.012552}

解を分離する

x_{1} = \frac{- 0.666 + 1.09525584}{2 \cdot 0.012552}, x_{2} = \frac{- 0.666 - 1.09525584}{2 \cdot 0.012552}

x = \frac{- 0.666 + 1.09525584}{2 \cdot 0.012552} : \frac{- 0.666 + 1.09525584}{0.025104}

x = \frac{- 0.666 - 1.09525584}{2 \cdot 0.012552} : \frac{- 0.666 - 1.09525584}{0.025104}

二次equationの解:

x = \frac{- 0.666 + 1.09525584}{0.025104}, x = \frac{- 0.666 - 1.09525584}{0.025104}

グラフ

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