यदि \(O={x:x\in \mathbb{Z},,x^2=2x}\), तो (O) का सही रूप क्या है?
If \(O={x:x\in \mathbb{Z},,x^2=2x}\), what is the correct form of (O)?
Explanation opens after your attempt
A. \(O=\{0,2\}\)
Concept
Write \(x^2=2x\) as \(x^2-2x=0\).
Why this answer is correct
(x(x-2)=0), so (x=0) or (x=2).
Exam Tip
Do not divide by (x) and accidentally lose the solution (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: गुणनखंड बनाते समय (x) से भाग देकर (x=0) को गलती से न हटाएँ।
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