\(\frac{1}{4-\sqrt{7}}\) का परिमेयकृत रूप क्या है?
What is the rationalised form of \(\frac{1}{4-\sqrt{7}}\)?
Explanation opens after your attempt
A. \(\frac{4+\sqrt{7}}{9}\)
Concept
Multiplying by the conjugate makes the denominator (16-7=9). So the answer is \(\frac{4+\sqrt{7}}{9}\).
Why this answer is correct
The correct answer is A. \(\frac{4+\sqrt{7}}{9}\). Multiplying by the conjugate makes the denominator (16-7=9). So the answer is \(\frac{4+\sqrt{7}}{9}\).
Exam Tip
संयुग्मी से गुणा करने पर हर (16-7=9) बनता है। इसलिए उत्तर \(\frac{4+\sqrt{7}}{9}\) है।
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