Level:
Project ID:
2010013207
Source Problem:
Accepted:
0
Clonable:
1
Easy:
0
Find the complex roots of the following quadratic equation.
\[ 2x^2 + 5\mathrm{i} = 0 \]
\( x_1=-\frac{\sqrt5}2+\frac{\sqrt5}2\mathrm{i},\ \ x_2=\frac{\sqrt5}2-\frac{\sqrt5}2\mathrm{i} \)
\( x_1=\frac{\sqrt5}2+\frac{\sqrt5}2\mathrm{i},\ \ x_2=-\frac{\sqrt5}2-\frac{\sqrt5}2\mathrm{i} \)
\( x_1=\frac{\sqrt5}2\mathrm{i},\ \ x_2=-\frac{\sqrt5}2\mathrm{i} \)
\( x_1=-\frac{\sqrt5}2,\ \ x_2=\frac{\sqrt5}2\)