100z^2=4

解

100 z^{2} = 4

z = \frac{1}{5}, z = - \frac{1}{5}

十進法表記

z = 0.2, z = - 0.2

解答ステップ

100 z^{2} = 4

以下で両辺を割る

100

z^{2} = \frac{1}{25}

x^{2} = f (a)

の場合, 解は

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

z = \frac{1}{25}, z = - \frac{1}{25}

\frac{1}{25} = \frac{1}{5}

- \frac{1}{25} = - \frac{1}{5}

z = \frac{1}{5}, z = - \frac{1}{5}