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人気のある代数 >

3x^2+14x+10=0

解

3 x^{2} + 14 x + 10 = 0

解

x = \frac{- 7 + 19}{3}, x = - \frac{7 + 19}{3}

+1

十進法表記

x = - 0.88036 \dots, x = - 3.78629 \dots

解答ステップ

3 x^{2} + 14 x + 10 = 0

解くとthe二次式

x_{1, 2} = \frac{- 14 \pm 1 4 ^{2} - 4 \cdot 3 \cdot 10}{2 \cdot 3}

1 4^{2} - 4 \cdot 3 \cdot 10 = 219

x_{1, 2} = \frac{- 14 \pm 2 19}{2 \cdot 3}

解を分離する

x_{1} = \frac{- 14 + 2 19}{2 \cdot 3}, x_{2} = \frac{- 14 - 2 19}{2 \cdot 3}

x = \frac{- 14 + 2 19}{2 \cdot 3} : \frac{- 7 + 19}{3}

x = \frac{- 14 - 2 19}{2 \cdot 3} : - \frac{7 + 19}{3}

二次equationの解:

x = \frac{- 7 + 19}{3}, x = - \frac{7 + 19}{3}

グラフ

人気の例

9 (x^{2} - 10) - 3 = 7

m^{2} + 25 = 0

10x^2+15x-9=2x^2+x-14

10 x^{2} + 15 x - 9 = 2 x^{2} + x - 14

-2z^2-10z+20=-3z^2

- 2 z^{2} - 10 z + 20 = - 3 z^{2}

(x-8)^2+(x-5)^2=(x-9)^2

(x - 8)^{2} + (x - 5)^{2} = (x - 9)^{2}