Exams › SSC CGL (Prelims) › General

Simplify: \(\sqrt{72}-\sqrt{18}+\sqrt{50}\).

1. 8\sqrt{2}
2. 7\sqrt{2}
3. 6\sqrt{2}
4. 5\sqrt{2}

Correct answer: 8\sqrt{2}

Solution

\(\sqrt{72}=6\sqrt{2}\), \(\sqrt{18}=3\sqrt{2}\), and \(\sqrt{50}=5\sqrt{2}\). So the expression becomes \(6\sqrt{2}-3\sqrt{2}+5\sqrt{2}=8\sqrt{2}\).

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