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人気のある代数 >

-1.86x^2+18.76x+1.21=10

解

- 1.86 x^{2} + 18.76 x + 1.21 = 10

解

x = \frac{938 - 5 28654}{186}, x = \frac{938 + 5 28654}{186}

+1

十進法表記

x = 0.49260 \dots, x = 9.59341 \dots

解答ステップ

- 1.86 x^{2} + 18.76 x + 1.21 = 10

以下で両辺を乗じる:

100

- 186 x^{2} + 1876 x + 121 = 1000

1000

を左側に移動します

- 186 x^{2} + 1876 x - 879 = 0

解くとthe二次式

x_{1, 2} = \frac{- 1876 \pm 187 6 ^{2} - 4 ( - 186 ) ( - 879 )}{2 ( - 186 )}

187 6^{2} - 4 (- 186) (- 879) = 1028654

x_{1, 2} = \frac{- 1876 \pm 10 28654}{2 ( - 186 )}

解を分離する

x_{1} = \frac{- 1876 + 10 28654}{2 ( - 186 )}, x_{2} = \frac{- 1876 - 10 28654}{2 ( - 186 )}

x = \frac{- 1876 + 10 28654}{2 ( - 186 )} : \frac{938 - 5 28654}{186}

x = \frac{- 1876 - 10 28654}{2 ( - 186 )} : \frac{938 + 5 28654}{186}

二次equationの解:

x = \frac{938 - 5 28654}{186}, x = \frac{938 + 5 28654}{186}

グラフ

人気の例

(2 x - 5)^{2} = 4242

3m(m-1)-9=2m(m-3)+4

3 m (m - 1) - 9 = 2 m (m - 3) + 4

4 w^{2} + 12 w = - 9

-0.2x^2+3x+0.25=0

- 0.2 x^{2} + 3 x + 0.25 = 0

- 110 = 10 - 5 x^{2}