\(x^2-4x-y^2+4\) को गुणनखंडित करने पर क्या मिलेगा?

What is obtained by factorising \(x^2-4x-y^2+4\)?

Author: Muft Shiksha Editorial Team Published:
Explanation opens after your attempt
Correct Answer

A. ((x-2-y)(x-2+y))

Step 1

Concept

Since (x-2-4x+4=(x-2)2), the expression becomes ((x-2)2-y-2). Exam tip: use (+4) to form a perfect square.

Step 2

Why this answer is correct

The correct answer is A. ((x-2-y)(x-2+y)). Since (x-2-4x+4=(x-2)2), the expression becomes ((x-2)2-y-2). Exam tip: use (+4) to form a perfect square.

Step 3

Exam Tip

(x-2-4x+4=(x-2)2), इसलिए expression ((x-2)2-y-2) बनती है। परीक्षा में (+4) को पूर्ण वर्ग बनाने में उपयोग करें।

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Mathematics Answer, Explanation and Revision Hints

\(x^2-4x-y^2+4\) को गुणनखंडित करने पर क्या मिलेगा? / What is obtained by factorising \(x^2-4x-y^2+4\)?

Correct Answer: A. ((x-2-y)(x-2+y)). Explanation: (x-2-4x+4=(x-2)2), इसलिए expression ((x-2)2-y-2) बनती है। परीक्षा में (+4) को पूर्ण वर्ग बनाने में उपयोग करें। / Since (x-2-4x+4=(x-2)2), the expression becomes ((x-2)2-y-2). Exam tip: use (+4) to form a perfect square.

Which concept should I revise for this Mathematics MCQ?

Since (x-2-4x+4=(x-2)2), the expression becomes ((x-2)2-y-2). Exam tip: use (+4) to form a perfect square.

What exam hint can help solve this Mathematics question?

(x-2-4x+4=(x-2)2), इसलिए expression ((x-2)2-y-2) बनती है। परीक्षा में (+4) को पूर्ण वर्ग बनाने में उपयोग करें।