यदि \(r=\frac{1}{\sqrt{17}+4}\) है तो (r) का सरल रूप कौन-सा है?

If \(r=\frac{1}{\sqrt{17}+4}\), which is the simplified form of (r)?

Author: Muft Shiksha Editorial Team Published:
Explanation opens after your attempt
Correct Answer

A. \(\sqrt{17}-4\)

Step 1

Concept

Multiplying by the conjugate makes the denominator (17-16=1). So the simplified form is \(\sqrt{17}-4\).

Step 2

Why this answer is correct

The correct answer is A. \(\sqrt{17}-4\). Multiplying by the conjugate makes the denominator (17-16=1). So the simplified form is \(\sqrt{17}-4\).

Step 3

Exam Tip

संयुग्मी से गुणा करने पर हर (17-16=1) बनता है। इसलिए सरल रूप \(\sqrt{17}-4\) है।

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Mathematics Answer, Explanation and Revision Hints

यदि \(r=\frac{1}{\sqrt{17}+4}\) है तो (r) का सरल रूप कौन-सा है? / If \(r=\frac{1}{\sqrt{17}+4}\), which is the simplified form of (r)?

Correct Answer: A. \(\sqrt{17}-4\). Explanation: संयुग्मी से गुणा करने पर हर (17-16=1) बनता है। इसलिए सरल रूप \(\sqrt{17}-4\) है। / Multiplying by the conjugate makes the denominator (17-16=1). So the simplified form is \(\sqrt{17}-4\).

Which concept should I revise for this Mathematics MCQ?

Multiplying by the conjugate makes the denominator (17-16=1). So the simplified form is \(\sqrt{17}-4\).

What exam hint can help solve this Mathematics question?

संयुग्मी से गुणा करने पर हर (17-16=1) बनता है। इसलिए सरल रूप \(\sqrt{17}-4\) है।