किस बहुपद के शून्यक वास्तविक हैं लेकिन परिमेय नहीं हैं?
Which polynomial has real zeroes but not rational zeroes?
Explanation opens after your attempt
Correct Answer
C. \(x^2-8\)
Concept
From \(x^2-8=0\), \(x=\pm2\sqrt{2}\), which are irrational real. Check both perfect-square status and positivity.
Why this answer is correct
The correct answer is C. \(x^2-8\). From \(x^2-8=0\), \(x=\pm2\sqrt{2}\), which are irrational real. Check both perfect-square status and positivity.
Exam Tip
\(x^2-8=0\) से \(x=\pm2\sqrt{2}\), जो अपरिमेय वास्तविक हैं। पूर्ण वर्ग और धनात्मकता दोनों जाँचें।
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