0.81307831x^2-71.248+1600=0

解

0.81307831 x^{2} - 71.248 + 1600 = 0

x = \frac{400 955470}{81307831} i, x = - \frac{400 955470}{81307831} i

解答ステップ

0.81307831 x^{2} - 71.248 + 1600 = 0

71.248

を右側に移動します

0.81307831 x^{2} + 1600 = 71.248

1600

を右側に移動します

0.81307831 x^{2} = - 1528.752

以下で両辺を割る

0.81307831

x^{2} = - \frac{1528.752}{0.81307831}

x^{2} = f (a)

の場合, 解は

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

x = - \frac{1528.752}{0.81307831}, x = - - \frac{1528.752}{0.81307831}

- \frac{1528.752}{0.81307831} = \frac{400 955470}{81307831} i

- - \frac{1528.752}{0.81307831} = - \frac{400 955470}{81307831} i

x = \frac{400 955470}{81307831} i, x = - \frac{400 955470}{81307831} i