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人気のある代数 >

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

解

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

解

x = - \frac{- 3 + 21}{6}, x = \frac{3 + 21}{6}

+1

十進法表記

x = - 0.26376 \dots, x = 1.26376 \dots

解答ステップ

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

解くとthe二次式

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

3^{2} - 4 (- 3) \cdot 1 = 21

x_{1, 2} = \frac{- 3 \pm 21}{2 ( - 3 )}

解を分離する

x_{1} = \frac{- 3 + 21}{2 ( - 3 )}, x_{2} = \frac{- 3 - 21}{2 ( - 3 )}

x = \frac{- 3 + 21}{2 ( - 3 )} : - \frac{- 3 + 21}{6}

x = \frac{- 3 - 21}{2 ( - 3 )} : \frac{3 + 21}{6}

二次equationの解:

x = - \frac{- 3 + 21}{6}, x = \frac{3 + 21}{6}

グラフ

人気の例

7^{2} + x^{2} = 1 3^{2}

p^2+0.8p+0.16=1

p^{2} + 0.8 p + 0.16 = 1

(x+4)^2+(x-3)^2=(x-5)^2

(x + 4)^{2} + (x - 3)^{2} = (x - 5)^{2}

z (z + 5) = - 6

0=(-1)/(500)(x-100)^2+20

0 = \frac{- 1}{500} (x - 100)^{2} + 20