-x^2+4.6x-5.29=0

解

- x^{2} + 4.6 x - 5.29 = 0

x = \frac{23}{10}

十進法表記

x = 2.3

解答ステップ

- x^{2} + 4.6 x - 5.29 = 0

以下で両辺を乗じる:

100

- 100 x^{2} + 460 x - 529 = 0

解くとthe二次式

x_{1, 2} = \frac{- 460 \pm 46 0 ^{2} - 4 ( - 100 ) ( - 529 )}{2 ( - 100 )}

46 0^{2} - 4 (- 100) (- 529) = 0

x_{1, 2} = \frac{- 460 \pm 0}{2 ( - 100 )}

x = \frac{- 460}{2 ( - 100 )}

\frac{- 460}{2 ( - 100 )} = \frac{23}{10}

x = \frac{23}{10}

二次equationの解:

x = \frac{23}{10}