\(49m^2-70mn+25n^2\) का गुणनखंडन कौन सा है?

Which is the factorisation of \(49m^2-70mn+25n^2\)?

Author: Muft Shiksha Editorial Team Published:
Explanation opens after your attempt
Correct Answer

A. ((7m-5n)2)

Step 1

Concept

(49m-2=(7m)2) and (25n-2=(5n)2). The middle term is \(-2\cdot7m\cdot5n\).

Step 2

Why this answer is correct

The correct answer is A. ((7m-5n)2). (49m-2=(7m)2) and (25n-2=(5n)2). The middle term is \(-2\cdot7m\cdot5n\).

Step 3

Exam Tip

(49m-2=(7m)2) और (25n-2=(5n)2) है। मध्य पद \(-2\cdot7m\cdot5n\) है।

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Mathematics Answer, Explanation and Revision Hints

\(49m^2-70mn+25n^2\) का गुणनखंडन कौन सा है? / Which is the factorisation of \(49m^2-70mn+25n^2\)?

Correct Answer: A. ((7m-5n)2). Explanation: (49m-2=(7m)2) और (25n-2=(5n)2) है। मध्य पद \(-2\cdot7m\cdot5n\) है। / (49m-2=(7m)2) and (25n-2=(5n)2). The middle term is \(-2\cdot7m\cdot5n\).

Which concept should I revise for this Mathematics MCQ?

(49m-2=(7m)2) and (25n-2=(5n)2). The middle term is \(-2\cdot7m\cdot5n\).

What exam hint can help solve this Mathematics question?

(49m-2=(7m)2) और (25n-2=(5n)2) है। मध्य पद \(-2\cdot7m\cdot5n\) है।