कौन सा विकल्प \(\sqrt{98}-\sqrt{50}\) का सही रूप और प्रकार देता है?
Which option gives the correct form and type of \(\sqrt{98}-\sqrt{50}\)?
Explanation opens after your attempt
Correct Answer
A. \(2\sqrt{2}\) और अपरिमेय\(2\sqrt{2}\) and irrational
Concept
\(\sqrt{98}=7\sqrt{2}\) and \(\sqrt{50}=5\sqrt{2}\).
Why this answer is correct
The difference is \(2\sqrt{2}\), which is irrational.
Exam Tip
Directly subtracting numbers inside radicals is wrong. चरण 1: \(\sqrt{98}=7\sqrt{2}\) और \(\sqrt{50}=5\sqrt{2}\)। चरण 2: अंतर \(2\sqrt{2}\) है जो अपरिमेय है। चरण 3: वर्गमूलों के अंदर की संख्याओं को सीधे घटाना गलत है।
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