\(3x^2-5xy+2y^2-7x^2+xy-y^2\) को सरल करने पर क्या मिलेगा?

What is obtained after simplifying \(3x^2-5xy+2y^2-7x^2+xy-y^2\)?

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

A. \(-4x^2-4xy+y^2\)

Step 1

Concept

\(3x^2-7x^2=-4x^2\), (-5xy+xy=-4xy), and \(2y^2-y^2=y^2\).

Step 2

Why this answer is correct

The correct answer is A. \(-4x^2-4xy+y^2\). \(3x^2-7x^2=-4x^2\), (-5xy+xy=-4xy), and \(2y^2-y^2=y^2\).

Step 3

Exam Tip

\(3x^2-7x^2=-4x^2\), (-5xy+xy=-4xy), और \(2y^2-y^2=y^2\)।

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Mathematics Answer, Explanation and Revision Hints

\(3x^2-5xy+2y^2-7x^2+xy-y^2\) को सरल करने पर क्या मिलेगा? / What is obtained after simplifying \(3x^2-5xy+2y^2-7x^2+xy-y^2\)?

Correct Answer: A. \(-4x^2-4xy+y^2\). Explanation: \(3x^2-7x^2=-4x^2\), (-5xy+xy=-4xy), और \(2y^2-y^2=y^2\)। / \(3x^2-7x^2=-4x^2\), (-5xy+xy=-4xy), and \(2y^2-y^2=y^2\).

Which concept should I revise for this Mathematics MCQ?

\(3x^2-7x^2=-4x^2\), (-5xy+xy=-4xy), and \(2y^2-y^2=y^2\).

What exam hint can help solve this Mathematics question?

\(3x^2-7x^2=-4x^2\), (-5xy+xy=-4xy), और \(2y^2-y^2=y^2\)।