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人気のある代数 >

-3.1x^2+4.5x-19.9=750

解

- 3.1 x^{2} + 4.5 x - 19.9 = 750

解

x = \frac{45}{62} - i \frac{952651}{62}, x = \frac{45}{62} + i \frac{952651}{62}

解答ステップ

- 3.1 x^{2} + 4.5 x - 19.9 = 750

以下で両辺を乗じる:

10

- 31 x^{2} + 45 x - 199 = 7500

7500

を左側に移動します

- 31 x^{2} + 45 x - 7699 = 0

解くとthe二次式

x_{1, 2} = \frac{- 45 \pm 4 5 ^{2} - 4 ( - 31 ) ( - 7699 )}{2 ( - 31 )}

簡素化

4 5^{2} - 4 (- 31) (- 7699) : 952651 i

x_{1, 2} = \frac{- 45 \pm 952651 i}{2 ( - 31 )}

解を分離する

x_{1} = \frac{- 45 + 952651 i}{2 ( - 31 )}, x_{2} = \frac{- 45 - 952651 i}{2 ( - 31 )}

x = \frac{- 45 + 952651 i}{2 ( - 31 )} : \frac{45}{62} - i \frac{952651}{62}

x = \frac{- 45 - 952651 i}{2 ( - 31 )} : \frac{45}{62} + i \frac{952651}{62}

二次equationの解:

x = \frac{45}{62} - i \frac{952651}{62}, x = \frac{45}{62} + i \frac{952651}{62}

グラフ

人気の例

log_{6}(1/216)=x

lo g_{6} (\frac{1}{216}) = x

因数 2a^2-3ab-2b^2

f a c t or 2 a^{2} - 3 ab - 2 b^{2}

3 f \leq 15

3x^2-7x-5=x^2+7-5x

3 x^{2} - 7 x - 5 = x^{2} + 7 - 5 x

∣ x + 7 ∣ > 3