कौन-सा विकल्प \(\sqrt{50}+\sqrt{72}-\sqrt{98}\) का सही सरल रूप है?
Which option is the correct simplified form of \(\sqrt{50}+\sqrt{72}-\sqrt{98}\)?
Explanation opens after your attempt
Correct Answer
A. \(4\sqrt{2}\)
Concept
\(\sqrt{50}=5\sqrt{2}\), \(\sqrt{72}=6\sqrt{2}\), and \(\sqrt{98}=7\sqrt{2}\).
Why this answer is correct
\(5\sqrt{2}+6\sqrt{2}-7\sqrt{2}=4\sqrt{2}\).
Exam Tip
Once all terms are like surds, add or subtract only the coefficients. चरण 1: \(\sqrt{50}=5\sqrt{2}\), \(\sqrt{72}=6\sqrt{2}\), और \(\sqrt{98}=7\sqrt{2}\)। चरण 2: \(5\sqrt{2}+6\sqrt{2}-7\sqrt{2}=4\sqrt{2}\)। चरण 3: सभी पद समान मूल में बदल जाएँ तो केवल गुणांक जोड़ें या घटाएँ।
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