5x^2+14=0

解

5 x^{2} + 14 = 0

x = \frac{14}{5} i, x = - \frac{14}{5} i

解答ステップ

5 x^{2} + 14 = 0

14

を右側に移動します

5 x^{2} = - 14

以下で両辺を割る

5

x^{2} = - \frac{14}{5}

x^{2} = f (a)

の場合, 解は

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

x = - \frac{14}{5}, x = - - \frac{14}{5}

- \frac{14}{5} = \frac{14}{5} i

- - \frac{14}{5} = - \frac{14}{5} i

x = \frac{14}{5} i, x = - \frac{14}{5} i