यदि (f(x)=\sqrt{x+2}) है, तो (f(x)=3) के लिए (x) क्या होगा?
If (f(x)=\sqrt{x+2}), what is (x) when (f(x)=3)?
Explanation opens after your attempt
A. (7)
Concept
\(\sqrt{x+2}=3\) gives (x+2=9) and (x=7). In exams keep the domain condition valid after squaring.
Why this answer is correct
The correct answer is A. (7). \(\sqrt{x+2}=3\) gives (x+2=9) and (x=7). In exams keep the domain condition valid after squaring.
Exam Tip
\(\sqrt{x+2}=3\) से (x+2=9) और (x=7) मिलता है। परीक्षा में वर्ग करने के बाद domain condition भी सही रखें।
Login to save your score, XP, coins and progress.
