(4-2sqrt(2))x^2-1=0

解

(4 - 22) x^{2} - 1 = 0

x = \frac{2 + 2}{2}, x = - \frac{2 + 2}{2}

十進法表記

x = 0.92387 \dots, x = - 0.92387 \dots

解答ステップ

(4 - 22) x^{2} - 1 = 0

1

を右側に移動します

(4 - 22) x^{2} = 1

以下で両辺を割る

4 - 22

x^{2} = \frac{2 + 2}{4}

x^{2} = f (a)

の場合, 解は

x = f (a), - f (a)

x = \frac{2 + 2}{4}, x = - \frac{2 + 2}{4}

\frac{2 + 2}{4} = \frac{2 + 2}{2}

- \frac{2 + 2}{4} = - \frac{2 + 2}{2}

x = \frac{2 + 2}{2}, x = - \frac{2 + 2}{2}