\(81-a^2\) का गुणनखंड रूप क्या होगा?
What will be the factorised form of \(81-a^2\)?
Explanation opens after your attempt
D. ((9-a)(9+a))
Concept
Since \(81=9^2\), (81-a-2=(9-a)(9+a)). Exam tip: take (9) as the square root of the first term.
Why this answer is correct
The correct answer is D. ((9-a)(9+a)). Since \(81=9^2\), (81-a-2=(9-a)(9+a)). Exam tip: take (9) as the square root of the first term.
Exam Tip
\(81=9^2\), इसलिए (81-a-2=(9-a)(9+a)) है। परीक्षा में पहले पद की वर्गमूल (9) लें।
Login to save your score, XP, coins and progress.
