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人気のある代数 >

-3x^2-x+5=0

解

- 3 x^{2} - x + 5 = 0

解

x = - \frac{1 + 61}{6}, x = \frac{61 - 1}{6}

+1

十進法表記

x = - 1.46837 \dots, x = 1.13504 \dots

解答ステップ

- 3 x^{2} - x + 5 = 0

解くとthe二次式

x_{1, 2} = \frac{- ( - 1 ) \pm ( - 1 ) ^{2} - 4 ( - 3 ) \cdot 5}{2 ( - 3 )}

(- 1)^{2} - 4 (- 3) \cdot 5 = 61

x_{1, 2} = \frac{- ( - 1 ) \pm 61}{2 ( - 3 )}

解を分離する

x_{1} = \frac{- ( - 1 ) + 61}{2 ( - 3 )}, x_{2} = \frac{- ( - 1 ) - 61}{2 ( - 3 )}

x = \frac{- ( - 1 ) + 61}{2 ( - 3 )} : - \frac{1 + 61}{6}

x = \frac{- ( - 1 ) - 61}{2 ( - 3 )} : \frac{61 - 1}{6}

二次equationの解:

x = - \frac{1 + 61}{6}, x = \frac{61 - 1}{6}

グラフ

人気の例

solvefor x,x^2y-2xy+y-x=0

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

8 x^{2} + 5 x - 3 = 0

- 3 x^{2} + 75 x = 0

4y^2+12y+25=3y^2-10

4 y^{2} + 12 y + 25 = 3 y^{2} - 10

solvefor x,15=2x^2-3x+1

so l v e f or x, 15 = 2 x^{2} - 3 x + 1