MCQ
Solve $\text{x}^2 + 1 = 0$.
- Ax = 1, -1
- ✓x = i, -i
- Cx = -1
- Dx = i
✓
Answer
Correct option: B.
x = i, -i
- x = i, -i
$\text{x}^2 + 1 = 0$
$\Rightarrow\text{x}^2=-1\Rightarrow\text{x}$
$=\pm\sqrt{-1}=\pm\text{i}$
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