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人気のある代数 >

11x^2+9x+4=0

解

11 x^{2} + 9 x + 4 = 0

解

x = - \frac{9}{22} + i \frac{95}{22}, x = - \frac{9}{22} - i \frac{95}{22}

解答ステップ

11 x^{2} + 9 x + 4 = 0

解くとthe二次式

x_{1, 2} = \frac{- 9 \pm 9 ^{2} - 4 \cdot 11 \cdot 4}{2 \cdot 11}

簡素化

9^{2} - 4 \cdot 11 \cdot 4 : 95 i

x_{1, 2} = \frac{- 9 \pm 95 i}{2 \cdot 11}

解を分離する

x_{1} = \frac{- 9 + 95 i}{2 \cdot 11}, x_{2} = \frac{- 9 - 95 i}{2 \cdot 11}

x = \frac{- 9 + 95 i}{2 \cdot 11} : - \frac{9}{22} + i \frac{95}{22}

x = \frac{- 9 - 95 i}{2 \cdot 11} : - \frac{9}{22} - i \frac{95}{22}

二次equationの解:

x = - \frac{9}{22} + i \frac{95}{22}, x = - \frac{9}{22} - i \frac{95}{22}

グラフ

人気の例

\frac{x}{5} = 5 + \frac{x - 4}{2}

(x^3+2x^2-4x-8)/(x+9)<= 0

\frac{x ^{3} + 2 x ^{2} - 4 x - 8}{x + 9} \leq 0

4 x^{2} - 8 x - 5 = 0

5 x^{2} + (3 x - 6) = 0

因数 6x^2-x^2-20

f a c t or 6 x^{2} - x^{2} - 20