\(7x^2-2xy+3y^2-4x^2+6xy-8y^2\) को सरल करने पर क्या मिलेगा?

What is obtained after simplifying \(7x^2-2xy+3y^2-4x^2+6xy-8y^2\)?

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

A. \(3x^2+4xy-5y^2\)

Step 1

Concept

\(7x^2-4x^2=3x^2\), (-2xy+6xy=4xy), and \(3y^2-8y^2=-5y^2\).

Step 2

Why this answer is correct

The correct answer is A. \(3x^2+4xy-5y^2\). \(7x^2-4x^2=3x^2\), (-2xy+6xy=4xy), and \(3y^2-8y^2=-5y^2\).

Step 3

Exam Tip

\(7x^2-4x^2=3x^2\), (-2xy+6xy=4xy), और \(3y^2-8y^2=-5y^2\)।

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Mathematics Answer, Explanation and Revision Hints

\(7x^2-2xy+3y^2-4x^2+6xy-8y^2\) को सरल करने पर क्या मिलेगा? / What is obtained after simplifying \(7x^2-2xy+3y^2-4x^2+6xy-8y^2\)?

Correct Answer: A. \(3x^2+4xy-5y^2\). Explanation: \(7x^2-4x^2=3x^2\), (-2xy+6xy=4xy), और \(3y^2-8y^2=-5y^2\)। / \(7x^2-4x^2=3x^2\), (-2xy+6xy=4xy), and \(3y^2-8y^2=-5y^2\).

Which concept should I revise for this Mathematics MCQ?

\(7x^2-4x^2=3x^2\), (-2xy+6xy=4xy), and \(3y^2-8y^2=-5y^2\).

What exam hint can help solve this Mathematics question?

\(7x^2-4x^2=3x^2\), (-2xy+6xy=4xy), और \(3y^2-8y^2=-5y^2\)।