Hard Mathematics Polynomials Class 10 Level 25

कौन सा विकल्प (\(\sqrt{20}-\sqrt{5}\)2) का मान है?

Which option is the value of (\(\sqrt{20}-\sqrt{5}\)2)?

Explanation opens after your attempt
Correct Answer

A. (5)

Step 1

Concept

\(\sqrt{20}=2\sqrt{5}\), so the bracket becomes \(\sqrt{5}\). Its square is (5).

Step 2

Why this answer is correct

The correct answer is A. (5). \(\sqrt{20}=2\sqrt{5}\), so the bracket becomes \(\sqrt{5}\). Its square is (5).

Step 3

Exam Tip

\(\sqrt{20}=2\sqrt{5}\), इसलिए कोष्ठक \(\sqrt{5}\) बनता है। उसका वर्ग (5) है।

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Mathematics Answer, Explanation and Revision Hints

कौन सा विकल्प (\(\sqrt{20}-\sqrt{5}\)2) का मान है? / Which option is the value of (\(\sqrt{20}-\sqrt{5}\)2)?

Correct Answer: A. (5). Explanation: \(\sqrt{20}=2\sqrt{5}\), इसलिए कोष्ठक \(\sqrt{5}\) बनता है। उसका वर्ग (5) है। / \(\sqrt{20}=2\sqrt{5}\), so the bracket becomes \(\sqrt{5}\). Its square is (5).

Which concept should I revise for this Mathematics MCQ?

\(\sqrt{20}=2\sqrt{5}\), so the bracket becomes \(\sqrt{5}\). Its square is (5).

What exam hint can help solve this Mathematics question?

\(\sqrt{20}=2\sqrt{5}\), इसलिए कोष्ठक \(\sqrt{5}\) बनता है। उसका वर्ग (5) है।

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