\(समुच्चय (W_1={x:x\in \mathbb{Z}\) और \(x^2=2x}) का सूची रूप क्या है\)?
\(What is the roster form of (W_1={x:x\in \mathbb{Z}\) and \(x^2=2x})\)?
Explanation opens after your attempt
A. \(W_1={0,2}\)
Concept
Rewrite \(x^2=2x\) as \(x^2-2x=0\).
Why this answer is correct
(x(x-2)=0), so (x=0) or (x=2).
Exam Tip
When (x) appears on both sides, avoid canceling without checking (x=0). चरण 1: \(x^2=2x\) को \(x^2-2x=0\) लिखें। चरण 2: (x(x-2)=0), इसलिए (x=0) या (x=2)। चरण 3: जब (x) दोनों पक्ष में हो, तो सीधे काटने से पहले (x=0) की संभावना जाँचें।
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