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
Correct Answer

A. \(O=\{0,2\}\)

Step 1

Concept

Write \(x^2=2x\) as \(x^2-2x=0\).

Step 2

Why this answer is correct

(x(x-2)=0), so (x=0) or (x=2).

Step 3

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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Mathematics Answer, Explanation and Revision Hints

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)?

Correct Answer: A. \(O=\{0,2\}\). Explanation: 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। / Step 1: Write \(x^2=2x\) as \(x^2-2x=0\). Step 2: (x(x-2)=0), so (x=0) or (x=2). Step 3: Do not divide by (x) and accidentally lose the solution (x=0).

Which concept should I revise for this Mathematics MCQ?

Write \(x^2=2x\) as \(x^2-2x=0\).

What exam hint can help solve this Mathematics question?

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।