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Complex Numbers and Quadratic Equations — Maths STD 11 Science — Question

CBSE BoardEnglish MediumSTD 11 ScienceMathsComplex Numbers and Quadratic Equations2 Marks
Question
Solve $x^2 + 2 = 0$
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Answer

We have $x^2 + 2 = 0$
or $x^2 = -2$ taking squareroot both sides
i.e.,$x =\pm \sqrt{-2} = \pm \sqrt2 i$

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