-2a*3a=25

解

- 2 a \cdot 3 a = 25

a = \frac{5}{6} i, a = - \frac{5}{6} i

解答ステップ

- 2 a \cdot 3 a = 25

簡素化

- 6 a^{2} = 25

以下で両辺を割る

- 6

\frac{- 6 a ^{2}}{- 6} = \frac{25}{- 6}

a^{2} = - \frac{25}{6}

x^{2} = f (a)

の場合, 解は

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

a = - \frac{25}{6}, a = - - \frac{25}{6}

- \frac{25}{6} = \frac{5}{6} i

- - \frac{25}{6} = - \frac{5}{6} i

a = \frac{5}{6} i, a = - \frac{5}{6} i