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人気のある代数 >

x^2-9(x-1)^2=0

解

x^{2} - 9 (x - 1)^{2} = 0

解

x = \frac{3}{4}, x = \frac{3}{2}

+1

十進法表記

x = 0.75, x = 1.5

解答ステップ

x^{2} - 9 (x - 1)^{2} = 0

拡張

x^{2} - 9 (x - 1)^{2} : - 8 x^{2} + 18 x - 9

- 8 x^{2} + 18 x - 9 = 0

解くとthe二次式

x_{1, 2} = \frac{- 18 \pm 1 8 ^{2} - 4 ( - 8 ) ( - 9 )}{2 ( - 8 )}

1 8^{2} - 4 (- 8) (- 9) = 6

x_{1, 2} = \frac{- 18 \pm 6}{2 ( - 8 )}

解を分離する

x_{1} = \frac{- 18 + 6}{2 ( - 8 )}, x_{2} = \frac{- 18 - 6}{2 ( - 8 )}

x = \frac{- 18 + 6}{2 ( - 8 )} : \frac{3}{4}

x = \frac{- 18 - 6}{2 ( - 8 )} : \frac{3}{2}

二次equationの解:

x = \frac{3}{4}, x = \frac{3}{2}

グラフ

人気の例

1-0.5x+0.3x^2=0

1 - 0.5 x + 0.3 x^{2} = 0

b^{2} - 4 b - 3 = 0

-2*x^2+11*x+c=0

- 2 \cdot x^{2} + 11 \cdot x + c = 0

根 x^2-10x+25=0

roo t s x^{2} - 10 x + 25 = 0

3 x^{2} + 18 x = - 18