यदि \(z=\sqrt{11}-\sqrt{7}\) है, तो \(z^2\) का मान कौन-सा है?
If \(z=\sqrt{11}-\sqrt{7}\), which is the value of \(z^2\)?
Explanation opens after your attempt
A. \(18-2\sqrt{77}\)
Concept
(\(\sqrt{11}-\sqrt{7}\)2=11+7-2\sqrt{77}). The middle term stays negative.
Why this answer is correct
The correct answer is A. \(18-2\sqrt{77}\). (\(\sqrt{11}-\sqrt{7}\)2=11+7-2\sqrt{77}). The middle term stays negative.
Exam Tip
(\(\sqrt{11}-\sqrt{7}\)2=11+7-2\sqrt{77}) है। मध्य पद का चिन्ह ऋणात्मक रहेगा।
Login to save your score, XP, coins and progress.
