समीकरण \(x^2-2x-1=0\) के मूलों की प्रकृति क्या है?

What is the nature of roots of \(x^2-2x-1=0\)?

Explanation opens after your attempt
Correct Answer

A. वास्तविक, अपरिमेय और भिन्नReal, irrational and distinct

Step 1

Concept

(D=8>0), but (8) is not a perfect square. Hence the roots are real, irrational and distinct.

Step 2

Why this answer is correct

The correct answer is A. वास्तविक, अपरिमेय और भिन्न / Real, irrational and distinct. (D=8>0), but (8) is not a perfect square. Hence the roots are real, irrational and distinct.

Step 3

Exam Tip

(D=8>0) है लेकिन (8) पूर्ण वर्ग नहीं है। इसलिए मूल वास्तविक, अपरिमेय और भिन्न हैं।

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Mathematics Answer, Explanation and Revision Hints

समीकरण \(x^2-2x-1=0\) के मूलों की प्रकृति क्या है? / What is the nature of roots of \(x^2-2x-1=0\)?

Correct Answer: A. वास्तविक, अपरिमेय और भिन्न / Real, irrational and distinct. Explanation: (D=8>0) है लेकिन (8) पूर्ण वर्ग नहीं है। इसलिए मूल वास्तविक, अपरिमेय और भिन्न हैं। / (D=8>0), but (8) is not a perfect square. Hence the roots are real, irrational and distinct.

Which concept should I revise for this Mathematics MCQ?

(D=8>0), but (8) is not a perfect square. Hence the roots are real, irrational and distinct.

What exam hint can help solve this Mathematics question?

(D=8>0) है लेकिन (8) पूर्ण वर्ग नहीं है। इसलिए मूल वास्तविक, अपरिमेय और भिन्न हैं।