\(x^2+2xy+y^2-z^2-2z-1\) का गुणनखंड रूप क्या है?
What is the factorised form of \(x^2+2xy+y^2-z^2-2z-1\)?
Explanation opens after your attempt
Correct Answer
A. ((x+y-z-1)(x+y+z+1))
Concept
First it becomes ((x+y)2-(z+1)2). In exams, understand \(-z^2-2z-1\) as (-(z+1)2).
Why this answer is correct
The correct answer is A. ((x+y-z-1)(x+y+z+1)). First it becomes ((x+y)2-(z+1)2). In exams, understand \(-z^2-2z-1\) as (-(z+1)2).
Exam Tip
पहले ((x+y)2-(z+1)2) बनता है। परीक्षा में \(-z^2-2z-1\) को (-(z+1)2) समझें।
Login to save your score, XP, coins and progress.