यदि \(A={x \in \mathbb{Z}:x^2=9}\) और \(B=\{-3,3\}\), तो सही कथन चुनिए।
If \(A={x \in \mathbb{Z}:x^2=9}\) and \(B=\{-3,3\}\), choose the correct statement.
Explanation opens after your attempt
A. (A=B)
Concept
The integer solutions of \(x^2=9\) are (x=3) and (x=-3).
Why this answer is correct
The elements of (A) are exactly (-3,3).
Exam Tip
Since (A) and (B) have the same elements, (A=B). चरण 1: \(x^2=9\) के पूर्णांक हल (x=3) और (x=-3) हैं। चरण 2: (A) के तत्व (-3,3) ही हैं। चरण 3: (A) और (B) के तत्व समान हैं इसलिए (A=B)।
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