समुच्चय \(A={x\in \mathbb{Z}:x\) सम है और \(x^2=2x}\) क्या है?
What is \(A={x\in \mathbb{Z}:x\) is even and \(x^2=2x}\)?
Explanation opens after your attempt
A. \(A=\{0,2\}\)
Concept
\(x^2=2x\) gives (x(x-2)=0).
Why this answer is correct
The solutions are (0) and (2), and both are even integers.
Exam Tip
Remember to treat (0) as even when checking parity. चरण 1: \(x^2=2x\) से (x(x-2)=0) मिलता है। चरण 2: हल (0) और (2) हैं, और दोनों सम पूर्णांक हैं। चरण 3: शून्य को सम मानकर जाँच करना न भूलें।
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