यदि (f(x)=\sqrt{x+6}) है, तो (f(x)=4) के लिए (x) क्या होगा?
If (f(x)=\sqrt{x+6}), what is (x) when (f(x)=4)?
Explanation opens after your attempt
A. (10)
Concept
\(\sqrt{x+6}=4\) gives (x+6=16), so (x=10). In exams check the answer in the original condition after squaring.
Why this answer is correct
The correct answer is A. (10). \(\sqrt{x+6}=4\) gives (x+6=16), so (x=10). In exams check the answer in the original condition after squaring.
Exam Tip
\(\sqrt{x+6}=4\) से (x+6=16), इसलिए (x=10)। परीक्षा में वर्ग करने के बाद उत्तर को मूल शर्त में जांचें।
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