निम्न में से कौन सा बहुपद परिमेय गुणांकों वाला है और जिसके शून्यक \(1+\sqrt{2}\) तथा \(1-\sqrt{2}\) हैं?
Which polynomial has rational coefficients and zeroes \(1+\sqrt{2}\) and \(1-\sqrt{2}\)?
Explanation opens after your attempt
Correct Answer
A. \(x^2-2x-1\)
Concept
The sum is (2) and the product is (1-2=-1), so the polynomial is \(x^2-2x-1\). Keep signs correct in exams.
Why this answer is correct
The correct answer is A. \(x^2-2x-1\). The sum is (2) and the product is (1-2=-1), so the polynomial is \(x^2-2x-1\). Keep signs correct in exams.
Exam Tip
योग (2) और गुणनफल (1-2=-1), इसलिए बहुपद \(x^2-2x-1\) है। परीक्षा में चिन्हों को ठीक रखें।
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