\(5y^2-19y+12\) का गुणनखंड रूप चुनिए।
Choose the factorised form of \(5y^2-19y+12\).
Explanation opens after your attempt
B. ((5y-3)(y-4))
Concept
Expanding ((5y-3)(y-4)) gives \(5y^2-23y+12\), so it is not correct. The correct option is ((5y-4)(y-3)).
Why this answer is correct
The correct answer is B. ((5y-3)(y-4)). Expanding ((5y-3)(y-4)) gives \(5y^2-23y+12\), so it is not correct. The correct option is ((5y-4)(y-3)).
Exam Tip
((5y-3)(y-4)) से \(5y^2-20y-3y+12\) नहीं बल्कि \(5y^2-23y+12\) आता है इसलिए यह गलत लगता है। सही विकल्प ((5y-4)(y-3)) है।
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