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人気のある代数 >

-2x^2+3x+4=0

解

- 2 x^{2} + 3 x + 4 = 0

解

x = - \frac{- 3 + 41}{4}, x = \frac{3 + 41}{4}

+1

十進法表記

x = - 0.85078 \dots, x = 2.35078 \dots

解答ステップ

- 2 x^{2} + 3 x + 4 = 0

解くとthe二次式

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

3^{2} - 4 (- 2) \cdot 4 = 41

x_{1, 2} = \frac{- 3 \pm 41}{2 ( - 2 )}

解を分離する

x_{1} = \frac{- 3 + 41}{2 ( - 2 )}, x_{2} = \frac{- 3 - 41}{2 ( - 2 )}

x = \frac{- 3 + 41}{2 ( - 2 )} : - \frac{- 3 + 41}{4}

x = \frac{- 3 - 41}{2 ( - 2 )} : \frac{3 + 41}{4}

二次equationの解:

x = - \frac{- 3 + 41}{4}, x = \frac{3 + 41}{4}

グラフ

人気の例

48=(2x+6)(2x+4)

48 = (2 x + 6) (2 x + 4)

x^{2} - 16 x = 21

x^{2} - 16 x = 20

solvefor X,Y=2X^2

so l v e f or X, Y = 2 X^{2}

- 16 x^{2} = - 25