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人気のある代数 >

9x^2-16x+4=0

解

9 x^{2} - 16 x + 4 = 0

解

x = \frac{2 ( 4 + 7 )}{9}, x = \frac{2 ( 4 - 7 )}{9}

+1

十進法表記

x = 1.47683 \dots, x = 0.30094 \dots

解答ステップ

9 x^{2} - 16 x + 4 = 0

解くとthe二次式

x_{1, 2} = \frac{- ( - 16 ) \pm ( - 16 ) ^{2} - 4 \cdot 9 \cdot 4}{2 \cdot 9}

(- 16)^{2} - 4 \cdot 9 \cdot 4 = 47

x_{1, 2} = \frac{- ( - 16 ) \pm 4 7}{2 \cdot 9}

解を分離する

x_{1} = \frac{- ( - 16 ) + 4 7}{2 \cdot 9}, x_{2} = \frac{- ( - 16 ) - 4 7}{2 \cdot 9}

x = \frac{- ( - 16 ) + 4 7}{2 \cdot 9} : \frac{2 ( 4 + 7 )}{9}

x = \frac{- ( - 16 ) - 4 7}{2 \cdot 9} : \frac{2 ( 4 - 7 )}{9}

二次equationの解:

x = \frac{2 ( 4 + 7 )}{9}, x = \frac{2 ( 4 - 7 )}{9}

グラフ

人気の例

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

6x^2+10x+11=x^2

6 x^{2} + 10 x + 11 = x^{2}

0 = 96 + 80 t - 16 t^{2}

3 x^{2} - 10 x + 9 = 0

(2 x + 3) (x - 2) = 0