\( \frac{\sqrt{5}-1}{\sqrt{5}+1} \) का हर परिमेय करने के बाद हर क्या होगा?
What will be the denominator after rationalising \( \frac{\sqrt{5}-1}{\sqrt{5}+1} \)?
Explanation opens after your attempt
A. (4)
Concept
Multiplying by the conjugate \( \sqrt{5}-1 \) makes the denominator (5-1=4). Use difference of squares in the conjugate method.
Why this answer is correct
The correct answer is A. (4). Multiplying by the conjugate \( \sqrt{5}-1 \) makes the denominator (5-1=4). Use difference of squares in the conjugate method.
Exam Tip
हर के संयुग्मी \( \sqrt{5}-1 \) से गुणा करने पर हर (5-1=4) होगा। संयुग्मी विधि में अंतर के वर्ग का प्रयोग करें।
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