निम्न में से कौन-सा विकल्प \(\sqrt{98}-\sqrt{50}\) का सही सरल रूप है?
Which option is the correct simplified form of \(\sqrt{98}-\sqrt{50}\)?
Explanation opens after your attempt
A. \(2\sqrt{2}\)
Concept
\(\sqrt{98}=7\sqrt{2}\) and \(\sqrt{50}=5\sqrt{2}\).
Why this answer is correct
The difference is \(7\sqrt{2}-5\sqrt{2}=2\sqrt{2}\), which is irrational.
Exam Tip
For like surds, subtract only the coefficients. चरण 1: \(\sqrt{98}=7\sqrt{2}\) और \(\sqrt{50}=5\sqrt{2}\)। चरण 2: अंतर \(7\sqrt{2}-5\sqrt{2}=2\sqrt{2}\), जो अपरिमेय है। चरण 3: समान मूल वाले पदों में केवल गुणांक घटाएँ।
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