\(9x^2-1\) का सही गुणनखंडन क्या है?
What is the correct factorisation of \(9x^2-1\)?
Explanation opens after your attempt
D. ((3x-1)(3x+1))
Concept
(9x-2=(3x)2) and \(1=1^2\). So the difference of squares becomes ((3x-1)(3x+1)).
Why this answer is correct
The correct answer is D. ((3x-1)(3x+1)). (9x-2=(3x)2) and \(1=1^2\). So the difference of squares becomes ((3x-1)(3x+1)).
Exam Tip
(9x-2=(3x)2) और \(1=1^2\) है। इसलिए वर्गों का अंतर ((3x-1)(3x+1)) बनेगा।
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