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人気のある代数 >

-3x^2+15x+11=0

解

- 3 x^{2} + 15 x + 11 = 0

解

x = - \frac{- 15 + 357}{6}, x = \frac{15 + 357}{6}

+1

十進法表記

x = - 0.64907 \dots, x = 5.64907 \dots

解答ステップ

- 3 x^{2} + 15 x + 11 = 0

解くとthe二次式

x_{1, 2} = \frac{- 15 \pm 1 5 ^{2} - 4 ( - 3 ) \cdot 11}{2 ( - 3 )}

1 5^{2} - 4 (- 3) \cdot 11 = 357

x_{1, 2} = \frac{- 15 \pm 357}{2 ( - 3 )}

解を分離する

x_{1} = \frac{- 15 + 357}{2 ( - 3 )}, x_{2} = \frac{- 15 - 357}{2 ( - 3 )}

x = \frac{- 15 + 357}{2 ( - 3 )} : - \frac{- 15 + 357}{6}

x = \frac{- 15 - 357}{2 ( - 3 )} : \frac{15 + 357}{6}

二次equationの解:

x = - \frac{- 15 + 357}{6}, x = \frac{15 + 357}{6}

グラフ

人気の例

- 3 x^{2} - 24 x - 19 = 0

2 x^{2} - 18 = 46

solvefor y,xy^2-x^2y+6=0

so l v e f or y, x y^{2} - x^{2} y + 6 = 0

7 x^{2} + 1 = 29

completesquare x^2-10x-4=0

co m pl e t es q u a re x^{2} - 10 x - 4 = 0