\( \sqrt{a}+\sqrt{b}=\sqrt{a+b} \) सामान्यतः कब सही नहीं होता?
When is \( \sqrt{a}+\sqrt{b}=\sqrt{a+b} \) generally not correct?
Explanation opens after your attempt
Correct Answer
A. जब (a) और (b) दोनों धनात्मक होंWhen (a) and (b) are both positive
Concept
Generally \( \sqrt{a}+\sqrt{b} \neq \sqrt{a+b} \). For example, \( \sqrt{4}+\sqrt{9}=5 \), not \( \sqrt{13} \).
Why this answer is correct
The correct answer is A. जब (a) और (b) दोनों धनात्मक हों / When (a) and (b) are both positive. Generally \( \sqrt{a}+\sqrt{b} \neq \sqrt{a+b} \). For example, \( \sqrt{4}+\sqrt{9}=5 \), not \( \sqrt{13} \).
Exam Tip
सामान्यतः \( \sqrt{a}+\sqrt{b} \neq \sqrt{a+b} \) होता है। उदाहरण के लिए \( \sqrt{4}+\sqrt{9}=5 \) लेकिन \( \sqrt{13} \) नहीं।
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