45x^2+5=0

解

45 x^{2} + 5 = 0

x = \frac{1}{3} i, x = - \frac{1}{3} i

解答ステップ

45 x^{2} + 5 = 0

5

を右側に移動します

45 x^{2} = - 5

以下で両辺を割る

45

x^{2} = - \frac{1}{9}

x^{2} = f (a)

の場合, 解は

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

x = - \frac{1}{9}, x = - - \frac{1}{9}

- \frac{1}{9} = \frac{1}{3} i

- - \frac{1}{9} = - \frac{1}{3} i

x = \frac{1}{3} i, x = - \frac{1}{3} i