यदि \(x=\sqrt{10}-\sqrt{2}\) है तो \(x^2\) का मान कौन-सा है?
If \(x=\sqrt{10}-\sqrt{2}\), which is the value of \(x^2\)?
Explanation opens after your attempt
A. \(12-4\sqrt{5}\)
Concept
(\(\sqrt{10}-\sqrt{2}\)2=10+2-2\sqrt{20}=12-4\sqrt{5}). Watch the sign of the middle term.
Why this answer is correct
The correct answer is A. \(12-4\sqrt{5}\). (\(\sqrt{10}-\sqrt{2}\)2=10+2-2\sqrt{20}=12-4\sqrt{5}). Watch the sign of the middle term.
Exam Tip
(\(\sqrt{10}-\sqrt{2}\)2=10+2-2\sqrt{20}=12-4\sqrt{5}) है। मध्य पद का चिन्ह ध्यान रखें।
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