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人気のある代数 >

-2x^2+2x-1=0

解

- 2 x^{2} + 2 x - 1 = 0

解

x = \frac{1}{2} - i \frac{1}{2}, x = \frac{1}{2} + i \frac{1}{2}

解答ステップ

- 2 x^{2} + 2 x - 1 = 0

解くとthe二次式

x_{1, 2} = \frac{- 2 \pm 2 ^{2} - 4 ( - 2 ) ( - 1 )}{2 ( - 2 )}

簡素化

2^{2} - 4 (- 2) (- 1) : 2 i

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

解を分離する

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

x = \frac{- 2 + 2 i}{2 ( - 2 )} : \frac{1}{2} - i \frac{1}{2}

x = \frac{- 2 - 2 i}{2 ( - 2 )} : \frac{1}{2} + i \frac{1}{2}

二次equationの解:

x = \frac{1}{2} - i \frac{1}{2}, x = \frac{1}{2} + i \frac{1}{2}

グラフ

人気の例

- 36 x^{2} + 100 = 0

(8x^2-15x)-(x^2-27x)=ax^2+bx

(8 x^{2} - 15 x) - (x^{2} - 27 x) = a x^{2} + b x

3 x^{2} - 6 = x^{2} + 2

- 2 x^{2} - 3 x + 1 = 0

solvefor x,x^2+y^2=4

so l v e f or x, x^{2} + y^{2} = 4