\(\frac{1}{4+\sqrt{15}}\) का परिमेय हर वाला रूप क्या है?
What is the form of \(\frac{1}{4+\sqrt{15}}\) with a rational denominator?
Explanation opens after your attempt
A. \(4-\sqrt{15}\)
Concept
The conjugate of \(4+\sqrt{15}\) is \(4-\sqrt{15}\).
Why this answer is correct
\(\frac{1}{4+\sqrt{15}}\times\frac{4-\sqrt{15}}{4-\sqrt{15}}=\frac{4-\sqrt{15}}{16-15}=4-\sqrt{15}\).
Exam Tip
Use the conjugate of the denominator for rationalisation. चरण 1: हर \(4+\sqrt{15}\) का संयुग्म \(4-\sqrt{15}\) है। चरण 2: \(\frac{1}{4+\sqrt{15}}\times\frac{4-\sqrt{15}}{4-\sqrt{15}}=\frac{4-\sqrt{15}}{16-15}=4-\sqrt{15}\)। चरण 3: परिमेयकरण में हर का संयुग्म प्रयोग करें।
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