Expert Mathematics Quadratic Equations Class 10 Level 31

(x-2-2x+\(a^2+1\)=0) की जड़ों की प्रकृति क्या है?

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

Explanation opens after your attempt
Correct Answer

A. (a=0) पर समान वास्तविक, अन्यथा वास्तविक नहींEqual real at (a=0), otherwise not real

Step 1

Concept

The discriminant is (D=4-4\(a^2+1\)=-4a-2). Thus (D=0) at (a=0), and (D<0) when \(a\neq0\).

Step 2

Why this answer is correct

The correct answer is A. (a=0) पर समान वास्तविक, अन्यथा वास्तविक नहीं / Equal real at (a=0), otherwise not real. The discriminant is (D=4-4\(a^2+1\)=-4a-2). Thus (D=0) at (a=0), and (D<0) when \(a\neq0\).

Step 3

Exam Tip

विविक्तकर (D=4-4\(a^2+1\)=-4a-2) है। इसलिए (a=0) पर (D=0), और \(a\neq0\) पर (D<0)।

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Mathematics Answer, Explanation and Revision Hints

(x-2-2x+\(a^2+1\)=0) की जड़ों की प्रकृति क्या है? / What is the nature of the roots of (x-2-2x+\(a^2+1\)=0)?

Correct Answer: A. (a=0) पर समान वास्तविक, अन्यथा वास्तविक नहीं / Equal real at (a=0), otherwise not real. Explanation: विविक्तकर (D=4-4\(a^2+1\)=-4a-2) है। इसलिए (a=0) पर (D=0), और \(a\neq0\) पर (D<0)। / The discriminant is (D=4-4\(a^2+1\)=-4a-2). Thus (D=0) at (a=0), and (D<0) when \(a\neq0\).

Which concept should I revise for this Mathematics MCQ?

The discriminant is (D=4-4\(a^2+1\)=-4a-2). Thus (D=0) at (a=0), and (D<0) when \(a\neq0\).

What exam hint can help solve this Mathematics question?

विविक्तकर (D=4-4\(a^2+1\)=-4a-2) है। इसलिए (a=0) पर (D=0), और \(a\neq0\) पर (D<0)।

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