किस (k) के लिए \(x=\sqrt{2}\) बहुपद \(x^2+kx-2\) का शून्यक होगा?
For which (k) will \(x=\sqrt{2}\) be a zero of the polynomial \(x^2+kx-2\)?
Explanation opens after your attempt
Correct Answer
A. (0)
Concept
Substitution gives \(2+k\sqrt{2}-2=k\sqrt{2}=0\), so (k=0). In exams write (p\(\alpha\)=0) for a zero.
Why this answer is correct
The correct answer is A. (0). Substitution gives \(2+k\sqrt{2}-2=k\sqrt{2}=0\), so (k=0). In exams write (p\(\alpha\)=0) for a zero.
Exam Tip
रखने पर \(2+k\sqrt{2}-2=k\sqrt{2}=0\), इसलिए (k=0) है। परीक्षा में शून्यक होने पर (p\(\alpha\)=0) लिखें।
Login to save your score, XP, coins and progress.