\(5y^2-19y+12\) का गुणनखंड रूप चुनिए।

Choose the factorised form of \(5y^2-19y+12\).

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

B. ((5y-3)(y-4))

Step 1

Concept

Expanding ((5y-3)(y-4)) gives \(5y^2-23y+12\), so it is not correct. The correct option is ((5y-4)(y-3)).

Step 2

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)).

Step 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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Mathematics Answer, Explanation and Revision Hints

\(5y^2-19y+12\) का गुणनखंड रूप चुनिए। / Choose the factorised form of \(5y^2-19y+12\).

Correct Answer: B. ((5y-3)(y-4)). Explanation: ((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। / Expanding ((5y-3)(y-4)) gives \(5y^2-23y+12\), so it is not correct. The correct option is ((5y-4)(y-3)).

Which concept should I revise for this Mathematics MCQ?

Expanding ((5y-3)(y-4)) gives \(5y^2-23y+12\), so it is not correct. The correct option is ((5y-4)(y-3)).

What exam hint can help solve this Mathematics question?

((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।