यदि (p(x)=x-2+2\sqrt{7}x+6), तो इसके शून्यक कौन से हैं?
If (p(x)=x-2+2\sqrt{7}x+6), what are its zeroes?
Explanation opens after your attempt
Correct Answer
A. \(-\sqrt{7}+1\) और \(-\sqrt{7}-1\)\(-\sqrt{7}+1\) and \(-\sqrt{7}-1\)
Concept
Using the formula, \(x=\frac{-2\sqrt{7}\pm2}{2}=-\sqrt{7}\pm1\). Simplifying the discriminant first gives a clean answer.
Why this answer is correct
The correct answer is A. \(-\sqrt{7}+1\) और \(-\sqrt{7}-1\) / \(-\sqrt{7}+1\) and \(-\sqrt{7}-1\). Using the formula, \(x=\frac{-2\sqrt{7}\pm2}{2}=-\sqrt{7}\pm1\). Simplifying the discriminant first gives a clean answer.
Exam Tip
सूत्र से \(x=\frac{-2\sqrt{7}\pm2}{2}=-\sqrt{7}\pm1\)। पहले विविक्तकर सरल करने से उत्तर साफ मिलता है।
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