यदि \(x=3-\sqrt{5}\) है तो \( \frac{1}{x} \) किसके बराबर है?
If \(x=3-\sqrt{5}\), then \( \frac{1}{x} \) equals what?
Explanation opens after your attempt
A. \( \frac{3+\sqrt{5}}{4} \)
Concept
Multiply \( \frac{1}{3-\sqrt{5}} \) by the conjugate. The denominator is (9-5=4) and the numerator is \(3+\sqrt{5}\).
Why this answer is correct
The correct answer is A. \( \frac{3+\sqrt{5}}{4} \). Multiply \( \frac{1}{3-\sqrt{5}} \) by the conjugate. The denominator is (9-5=4) and the numerator is \(3+\sqrt{5}\).
Exam Tip
\( \frac{1}{3-\sqrt{5}} \) को संयुग्मी से गुणा करें। हर (9-5=4) और अंश \(3+\sqrt{5}\) होगा।
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