64x^2-48x+9=0

解

64 x^{2} - 48 x + 9 = 0

x = \frac{3}{8}

十進法表記

x = 0.375

解答ステップ

64 x^{2} - 48 x + 9 = 0

解くとthe二次式

x_{1, 2} = \frac{- ( - 48 ) \pm ( - 48 ) ^{2} - 4 \cdot 64 \cdot 9}{2 \cdot 64}

(- 48)^{2} - 4 \cdot 64 \cdot 9 = 0

x_{1, 2} = \frac{- ( - 48 ) \pm 0}{2 \cdot 64}

x = \frac{- ( - 48 )}{2 \cdot 64}

\frac{- ( - 48 )}{2 \cdot 64} = \frac{3}{8}

x = \frac{3}{8}

二次equationの解:

x = \frac{3}{8}