\(यदि (A={x\in\mathbb{Z}:x^2=16\) और \(x<0}), तो (A) क्या है\)?
\(If (A={x\in\mathbb{Z}:x^2=16\) and \(x<0}), what is (A)\)?
Explanation opens after your attempt
A. ({-4})
Concept
The integer solutions of \(x^2=16\) are (-4) and (4).
Why this answer is correct
The condition (x<0) leaves only (-4).
Exam Tip
An extra condition can reduce the solution set. चरण 1: \(x^2=16\) के पूर्णांक हल (-4) और (4) हैं। चरण 2: (x<0) शर्त के कारण केवल (-4) बचेगा। चरण 3: अतिरिक्त शर्त समाधान-समुच्चय को छोटा कर सकती है।
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