\(\sqrt{45}+\sqrt{20}\) का सरल रूप कौन-सा है?
Which is the simplified form of \(\sqrt{45}+\sqrt{20}\)?
Explanation opens after your attempt
D. \(5\sqrt{5}\)
Concept
\(\sqrt{45}=3\sqrt{5}\) and \(\sqrt{20}=2\sqrt{5}\), so the sum is \(5\sqrt{5}\). First take out perfect-square factors.
Why this answer is correct
The correct answer is D. \(5\sqrt{5}\). \(\sqrt{45}=3\sqrt{5}\) and \(\sqrt{20}=2\sqrt{5}\), so the sum is \(5\sqrt{5}\). First take out perfect-square factors.
Exam Tip
\(\sqrt{45}=3\sqrt{5}\) और \(\sqrt{20}=2\sqrt{5}\), इसलिए योग \(5\sqrt{5}\) है। पहले पूर्ण वर्ग गुणनखंड निकालें।
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