यदि मूल \(\alpha\) और \(\beta\) हैं तथा \(\alpha+\beta=6\) और \(\alpha\beta=8\) है तो \(\alpha^2+\beta^2\) का मान क्या है?

If the roots are \(\alpha\) and \(\beta\) with \(\alpha+\beta=6\) and \(\alpha\beta=8\), what is \(\alpha^2+\beta^2\)?

Explanation opens after your attempt
Correct Answer

A. (20)

Step 1

Concept

(\alpha-2+\beta-2=\(\alpha+\beta\)2-2\alpha\beta=36-16=20). Use identities in such questions.

Step 2

Why this answer is correct

The correct answer is A. (20). (\alpha-2+\beta-2=\(\alpha+\beta\)2-2\alpha\beta=36-16=20). Use identities in such questions.

Step 3

Exam Tip

(\alpha-2+\beta-2=\(\alpha+\beta\)2-2\alpha\beta=36-16=20) है। ऐसे प्रश्नों में पहचान का प्रयोग करें।

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Mathematics Answer, Explanation and Revision Hints

यदि मूल \(\alpha\) और \(\beta\) हैं तथा \(\alpha+\beta=6\) और \(\alpha\beta=8\) है तो \(\alpha^2+\beta^2\) का मान क्या है? / If the roots are \(\alpha\) and \(\beta\) with \(\alpha+\beta=6\) and \(\alpha\beta=8\), what is \(\alpha^2+\beta^2\)?

Correct Answer: A. (20). Explanation: (\alpha-2+\beta-2=\(\alpha+\beta\)2-2\alpha\beta=36-16=20) है। ऐसे प्रश्नों में पहचान का प्रयोग करें। / (\alpha-2+\beta-2=\(\alpha+\beta\)2-2\alpha\beta=36-16=20). Use identities in such questions.

Which concept should I revise for this Mathematics MCQ?

(\alpha-2+\beta-2=\(\alpha+\beta\)2-2\alpha\beta=36-16=20). Use identities in such questions.

What exam hint can help solve this Mathematics question?

(\alpha-2+\beta-2=\(\alpha+\beta\)2-2\alpha\beta=36-16=20) है। ऐसे प्रश्नों में पहचान का प्रयोग करें।