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人気のある代数 >

-4x^2-16x-19=0

解

- 4 x^{2} - 16 x - 19 = 0

解

x = - 2 - i \frac{3}{2}, x = - 2 + i \frac{3}{2}

解答ステップ

- 4 x^{2} - 16 x - 19 = 0

解くとthe二次式

x_{1, 2} = \frac{- ( - 16 ) \pm ( - 16 ) ^{2} - 4 ( - 4 ) ( - 19 )}{2 ( - 4 )}

簡素化

(- 16)^{2} - 4 (- 4) (- 19) : 43 i

x_{1, 2} = \frac{- ( - 16 ) \pm 4 3 i}{2 ( - 4 )}

解を分離する

x_{1} = \frac{- ( - 16 ) + 4 3 i}{2 ( - 4 )}, x_{2} = \frac{- ( - 16 ) - 4 3 i}{2 ( - 4 )}

x = \frac{- ( - 16 ) + 4 3 i}{2 ( - 4 )} : - 2 - i \frac{3}{2}

x = \frac{- ( - 16 ) - 4 3 i}{2 ( - 4 )} : - 2 + i \frac{3}{2}

二次equationの解:

x = - 2 - i \frac{3}{2}, x = - 2 + i \frac{3}{2}

グラフ

人気の例

solvefor y,x=9-y^2

so l v e f or y, x = 9 - y^{2}

12 x^{2} + 12 = 25 x

solvefor x,2x^2+3y^2+z^2-12x+12y+2z+28=0

so l v e f or x, 2 x^{2} + 3 y^{2} + z^{2} - 12 x + 12 y + 2 z + 28 = 0

solvefor x,(x-y)^2=2ay

so l v e f or x, (x - y)^{2} = 2 a y

X^{2} + 6 X + 8 = 0