\(9x^2+30xy+25y^2-49z^2\) का गुणनखंड रूप चुनिए।
Choose the factorised form of \(9x^2+30xy+25y^2-49z^2\).
Explanation opens after your attempt
D. ( (3x+5y-7z)(3x+5y+7z) )
Concept
First write \(9x^2+30xy+25y^2\) as ((3x+5y)2). Exam tip: use (49z-2=(7z)2) for difference of squares.
Why this answer is correct
The correct answer is D. ( (3x+5y-7z)(3x+5y+7z) ). First write \(9x^2+30xy+25y^2\) as ((3x+5y)2). Exam tip: use (49z-2=(7z)2) for difference of squares.
Exam Tip
पहले \(9x^2+30xy+25y^2\) को ((3x+5y)2) बनाएं। परीक्षा में (49z-2=(7z)2) से अंतर वर्ग लगाएं।
Login to save your score, XP, coins and progress.
