\(समुच्चय (R={x:x\) एक पूर्णांक है और \(x^2=4}) का सूची रूप क्या है\)?
\(What is the roster form of (R={x:x\) is an integer and \(x^2=4})\)?
Explanation opens after your attempt
Correct Answer
C. \(R=\{-2,2\}\)
Concept
The integer solutions of \(x^2=4\) are (x=2) and (x=-2).
Why this answer is correct
Both are integers, so both are included in the set.
Exam Tip
In square equations, check both positive and negative possibilities. चरण 1: \(x^2=4\) के दो पूर्णांक हल (x=2) और (x=-2) हैं। चरण 2: दोनों पूर्णांक हैं, इसलिए दोनों समुच्चय में आएँगे। चरण 3: वर्ग समीकरण में धनात्मक और ऋणात्मक दोनों संभावनाएँ जाँचें।
Login to save your score, XP, coins and progress.