यदि \(z=\sqrt{31}-\sqrt{22}\) है तो \(z^2\) का मान कौन-सा है?
If \(z=\sqrt{31}-\sqrt{22}\), which is the value of \(z^2\)?
Explanation opens after your attempt
D. \(53-2\sqrt{682}\)
Concept
(\(\sqrt{31}-\sqrt{22}\)2=31+22-2\sqrt{682}). Keep the middle term negative.
Why this answer is correct
The correct answer is D. \(53-2\sqrt{682}\). (\(\sqrt{31}-\sqrt{22}\)2=31+22-2\sqrt{682}). Keep the middle term negative.
Exam Tip
(\(\sqrt{31}-\sqrt{22}\)2=31+22-2\sqrt{682}) है। मध्य पद का चिन्ह ऋणात्मक रखें।
Login to save your score, XP, coins and progress.
