x^2+8/7+15/49 =0

解

x^{2} + \frac{8}{7} + \frac{15}{49} = 0

x = \frac{71}{7} i, x = - \frac{71}{7} i

解答ステップ

x^{2} + \frac{8}{7} + \frac{15}{49} = 0

\frac{8}{7}

を右側に移動します

x^{2} + \frac{15}{49} = - \frac{8}{7}

\frac{15}{49}

を右側に移動します

x^{2} = - \frac{8}{7} - \frac{15}{49}

簡素化

- \frac{8}{7} - \frac{15}{49} : - \frac{71}{49}

x^{2} = f (a)

の場合, 解は

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

x = - \frac{71}{49}, x = - - \frac{71}{49}

- \frac{71}{49} = \frac{71}{7} i

- - \frac{71}{49} = - \frac{71}{7} i

x = \frac{71}{7} i, x = - \frac{71}{7} i