Solve x2 + 1 = 0. - Vidyadip

MCQ

Solve x² + 1 = 0.

A
x = 1, -1
B
x = i, -i
C
x = -1
D
x = i

✓

Answer

x = i, -i

Solution:

$\text{x}^2 + 1 = 0$

$\Rightarrow\text{x}^2=-1\Rightarrow\text{x}$

$=\pm\sqrt{-1}=\pm\text{i}$

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