किस द्विघात बहुपद के शून्यक \(\sqrt{7}\) और \(-\sqrt{7}\) हैं?
Which quadratic polynomial has zeroes \(\sqrt{7}\) and \(-\sqrt{7}\)?
Explanation opens after your attempt
Correct Answer
B. \(x^2-7\)
Concept
\(The sum of zeroes is (0) and product is (-7), so the polynomial is (x^2-7). Use (x^2-\)sumx+product) to form a polynomial from zeroes.
Why this answer is correct
\(The correct answer is B. (x^2-7). The sum of zeroes is (0) and product is (-7), so the polynomial is (x^2-7). Use (x^2-\)sumx+product) to form a polynomial from zeroes.
Exam Tip
शून्यकों का योग (0) और गुणनफल (-7) है, इसलिए बहुपद \(x^2-7\) है। \(शून्यकों से बहुपद बनाते समय (x^2-\)योगx+गुणनफल) प्रयोग करें।
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