यदि \(a=\sqrt{8}+\sqrt{18}\) और \(b=\sqrt{8}-\sqrt{18}\), तो (ab) का मान क्या है?
If \(a=\sqrt{8}+\sqrt{18}\) and \(b=\sqrt{8}-\sqrt{18}\), what is the value of (ab)?
Explanation opens after your attempt
Correct Answer
A. (-10)
Concept
(ab=\(\sqrt{8}\)2-\(\sqrt{18}\)2).
Why this answer is correct
(ab=8-18=-10), which is rational.
Exam Tip
In conjugate multiplication, you do not always need to simplify each radical first. चरण 1: (ab=\(\sqrt{8}\)2-\(\sqrt{18}\)2) है। चरण 2: (ab=8-18=-10), जो परिमेय है। चरण 3: संयुग्मी गुणन में मूलों को अलग-अलग सरल करना जरूरी नहीं होता।
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