\(x^2-x-20\) का सही गुणनखंडन चुनिए।
Choose the correct factorisation of \(x^2-x-20\).
Explanation opens after your attempt
A. ((x-5)(x+4))
Concept
(-5+4=-1) and \(-5\cdot4=-20\). Therefore ((x-5)(x+4)) is correct.
Why this answer is correct
The correct answer is A. ((x-5)(x+4)). (-5+4=-1) and \(-5\cdot4=-20\). Therefore ((x-5)(x+4)) is correct.
Exam Tip
(-5+4=-1) और \(-5\cdot4=-20\) है। इसलिए ((x-5)(x+4)) सही है।
Login to save your score, XP, coins and progress.
