Hard Mathematics Polynomials Class 10 Level 26

यदि (x-2-2ax+\(a^2-5\)=0) के शून्यक \(a+\sqrt{5}\) और \(a-\sqrt{5}\) हैं, तो यह किस कारण सही है?

If zeroes of (x-2-2ax+\(a^2-5\)=0) are \(a+\sqrt{5}\) and \(a-\sqrt{5}\), why is it correct?

Explanation opens after your attempt
Correct Answer

A. योग (2a) और गुणनफल \(a^2-5\) हैंSum is (2a) and product is \(a^2-5\)

Step 1

Concept

(\(a+\sqrt{5}\)+\(a-\sqrt{5}\)=2a) and (\(a+\sqrt{5}\)\(a-\sqrt{5}\)=a-2-5). These match the polynomial.

Step 2

Why this answer is correct

The correct answer is A. योग (2a) और गुणनफल \(a^2-5\) हैं / Sum is (2a) and product is \(a^2-5\). (\(a+\sqrt{5}\)+\(a-\sqrt{5}\)=2a) and (\(a+\sqrt{5}\)\(a-\sqrt{5}\)=a-2-5). These match the polynomial.

Step 3

Exam Tip

(\(a+\sqrt{5}\)+\(a-\sqrt{5}\)=2a) और (\(a+\sqrt{5}\)\(a-\sqrt{5}\)=a-2-5)। यही बहुपद से मेल खाता है।

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Mathematics Answer, Explanation and Revision Hints

यदि (x-2-2ax+\(a^2-5\)=0) के शून्यक \(a+\sqrt{5}\) और \(a-\sqrt{5}\) हैं, तो यह किस कारण सही है? / If zeroes of (x-2-2ax+\(a^2-5\)=0) are \(a+\sqrt{5}\) and \(a-\sqrt{5}\), why is it correct?

Correct Answer: A. योग (2a) और गुणनफल \(a^2-5\) हैं / Sum is (2a) and product is \(a^2-5\). Explanation: (\(a+\sqrt{5}\)+\(a-\sqrt{5}\)=2a) और (\(a+\sqrt{5}\)\(a-\sqrt{5}\)=a-2-5)। यही बहुपद से मेल खाता है। / (\(a+\sqrt{5}\)+\(a-\sqrt{5}\)=2a) and (\(a+\sqrt{5}\)\(a-\sqrt{5}\)=a-2-5). These match the polynomial.

Which concept should I revise for this Mathematics MCQ?

(\(a+\sqrt{5}\)+\(a-\sqrt{5}\)=2a) and (\(a+\sqrt{5}\)\(a-\sqrt{5}\)=a-2-5). These match the polynomial.

What exam hint can help solve this Mathematics question?

(\(a+\sqrt{5}\)+\(a-\sqrt{5}\)=2a) और (\(a+\sqrt{5}\)\(a-\sqrt{5}\)=a-2-5)। यही बहुपद से मेल खाता है।

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