\(9m^2-1\) का सही गुणनखंड रूप क्या है?
What is the correct factorised form of \(9m^2-1\)?
Explanation opens after your attempt
D. ((3m-1)(3m+1))
Concept
(9m-2=(3m)2) and \(1=1^2\). Exam tip: apply the difference of squares formula.
Why this answer is correct
The correct answer is D. ((3m-1)(3m+1)). (9m-2=(3m)2) and \(1=1^2\). Exam tip: apply the difference of squares formula.
Exam Tip
(9m-2=(3m)2) और \(1=1^2\) है। परीक्षा में अंतर के वर्गों का सूत्र लगाएं।
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