\(\sqrt{80}-\sqrt{45}\) का सरल रूप क्या होगा?

What will be the simplified form of \(\sqrt{80}-\sqrt{45}\)?

Explanation opens after your attempt
Correct Answer

A. \(\sqrt{5}\)

Step 1

Concept

\(\sqrt{80}=4\sqrt{5}\) and \(\sqrt{45}=3\sqrt{5}\).

Step 2

Why this answer is correct

\(4\sqrt{5}-3\sqrt{5}=\sqrt{5}\).

Step 3

Exam Tip

Before subtracting, simplify both radicals completely. चरण 1: \(\sqrt{80}=4\sqrt{5}\) और \(\sqrt{45}=3\sqrt{5}\)। चरण 2: \(4\sqrt{5}-3\sqrt{5}=\sqrt{5}\)। चरण 3: घटाने से पहले दोनों वर्गमूलों को पूरी तरह सरल करें।

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Mathematics Answer, Explanation and Revision Hints

\(\sqrt{80}-\sqrt{45}\) का सरल रूप क्या होगा? / What will be the simplified form of \(\sqrt{80}-\sqrt{45}\)?

Correct Answer: A. \(\sqrt{5}\). Explanation: चरण 1: \(\sqrt{80}=4\sqrt{5}\) और \(\sqrt{45}=3\sqrt{5}\)। चरण 2: \(4\sqrt{5}-3\sqrt{5}=\sqrt{5}\)। चरण 3: घटाने से पहले दोनों वर्गमूलों को पूरी तरह सरल करें। / Step 1: \(\sqrt{80}=4\sqrt{5}\) and \(\sqrt{45}=3\sqrt{5}\). Step 2: \(4\sqrt{5}-3\sqrt{5}=\sqrt{5}\). Step 3: Before subtracting, simplify both radicals completely.

Which concept should I revise for this Mathematics MCQ?

\(\sqrt{80}=4\sqrt{5}\) and \(\sqrt{45}=3\sqrt{5}\).

What exam hint can help solve this Mathematics question?

Before subtracting, simplify both radicals completely. चरण 1: \(\sqrt{80}=4\sqrt{5}\) और \(\sqrt{45}=3\sqrt{5}\)। चरण 2: \(4\sqrt{5}-3\sqrt{5}=\sqrt{5}\)। चरण 3: घटाने से पहले दोनों वर्गमूलों को पूरी तरह सरल करें।