\(7+\sqrt{13}\) और \(7-\sqrt{13}\) का गुणनफल क्या है?
What is the product of \(7+\sqrt{13}\) and \(7-\sqrt{13}\)?
Explanation opens after your attempt
B. (36)
Concept
The product is (72-\(\sqrt{13}\)2=49-13=36). Use \(a^2-b^2\) for conjugate multiplication.
Why this answer is correct
The correct answer is B. (36). The product is (72-\(\sqrt{13}\)2=49-13=36). Use \(a^2-b^2\) for conjugate multiplication.
Exam Tip
गुणनफल (72-\(\sqrt{13}\)2=49-13=36) है। संयुग्मी गुणन में \(a^2-b^2\) लगाएं।
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