( \(2+\sqrt{7}\)2 ) का विस्तार क्या है?
What is the expansion of ( \(2+\sqrt{7}\)2 )?
Explanation opens after your attempt
A. \(11+4\sqrt{7}\)
Concept
Use ( (a+b)2=a-2+2ab+b-2 ). Here \(4+4\sqrt{7}+7=11+4\sqrt{7}\).
Why this answer is correct
The correct answer is A. \(11+4\sqrt{7}\). Use ( (a+b)2=a-2+2ab+b-2 ). Here \(4+4\sqrt{7}+7=11+4\sqrt{7}\).
Exam Tip
( (a+b)2=a-2+2ab+b-2 ) लगाएँ। यहाँ \(4+4\sqrt{7}+7=11+4\sqrt{7}\) मिलता है।
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