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4 X 2 + 1 = 0 - Mathematics

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प्रश्न

\[4 x^2 + 1 = 0\]

उत्तर

We have:

\[4 x^2 + 1 = 0\]

\[ \Rightarrow (2x )^2 - i^2 = 0\]

\[ \Rightarrow (2x )^2 - (i )^2 = 0\]

\[ \Rightarrow (2x + i) (2x - i) = 0\]

\[\Rightarrow (2x + i) = 0\] or \[(2x - i) = 0\] 

\[\Rightarrow 2x = - i\] or \[2x = i\]

\[\Rightarrow\] \[x = - \frac{i}{2}\]  or \[x = \frac{i}{2}\]

\[x = \frac{i}{2}\]

Hence, the roots of the equation are 

\[\frac{1}{2}i \text { and } - \frac{1}{2}i\]
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पाठ 14: Quadratic Equations - Exercise 14.1 [पृष्ठ ६]

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आरडी शर्मा Mathematics [English] Class 11
पाठ 14 Quadratic Equations
Exercise 14.1 | Q 6 | पृष्ठ ६

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