(\sqrt{5}\(2\sqrt{5}-3\sqrt{20}\)) का सरल रूप क्या है?
What is the simplified form of (\sqrt{5}\(2\sqrt{5}-3\sqrt{20}\))?
Explanation opens after your attempt
A. (-20)
Concept
\(\sqrt{20}=2\sqrt{5}\), so inside becomes \(2\sqrt{5}-6\sqrt{5}=-4\sqrt{5}\) and the product is (-20). Simplify the bracket first.
Why this answer is correct
The correct answer is A. (-20). \(\sqrt{20}=2\sqrt{5}\), so inside becomes \(2\sqrt{5}-6\sqrt{5}=-4\sqrt{5}\) and the product is (-20). Simplify the bracket first.
Exam Tip
\(\sqrt{20}=2\sqrt{5}\), इसलिए अंदर \(2\sqrt{5}-6\sqrt{5}=-4\sqrt{5}\) और गुणनफल (-20) है। पहले कोष्ठक सरल करें।
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