25x^2-10x+1=0

解

25 x^{2} - 10 x + 1 = 0

x = \frac{1}{5}

十進法表記

x = 0.2

解答ステップ

25 x^{2} - 10 x + 1 = 0

解くとthe二次式

x_{1, 2} = \frac{- ( - 10 ) \pm ( - 10 ) ^{2} - 4 \cdot 25 \cdot 1}{2 \cdot 25}

(- 10)^{2} - 4 \cdot 25 \cdot 1 = 0

x_{1, 2} = \frac{- ( - 10 ) \pm 0}{2 \cdot 25}

x = \frac{- ( - 10 )}{2 \cdot 25}

\frac{- ( - 10 )}{2 \cdot 25} = \frac{1}{5}

x = \frac{1}{5}

二次equationの解:

x = \frac{1}{5}