\(9x^2-5xy+4y^2-2x^2+8xy-7y^2\) को सरल करने पर क्या मिलेगा?

What is obtained after simplifying \(9x^2-5xy+4y^2-2x^2+8xy-7y^2\)?

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

A. \(7x^2+3xy-3y^2\)

Step 1

Concept

\(9x^2-2x^2=7x^2\), (-5xy+8xy=3xy), and \(4y^2-7y^2=-3y^2\).

Step 2

Why this answer is correct

The correct answer is A. \(7x^2+3xy-3y^2\). \(9x^2-2x^2=7x^2\), (-5xy+8xy=3xy), and \(4y^2-7y^2=-3y^2\).

Step 3

Exam Tip

\(9x^2-2x^2=7x^2\), (-5xy+8xy=3xy), और \(4y^2-7y^2=-3y^2\)।

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Mathematics Answer, Explanation and Revision Hints

\(9x^2-5xy+4y^2-2x^2+8xy-7y^2\) को सरल करने पर क्या मिलेगा? / What is obtained after simplifying \(9x^2-5xy+4y^2-2x^2+8xy-7y^2\)?

Correct Answer: A. \(7x^2+3xy-3y^2\). Explanation: \(9x^2-2x^2=7x^2\), (-5xy+8xy=3xy), और \(4y^2-7y^2=-3y^2\)। / \(9x^2-2x^2=7x^2\), (-5xy+8xy=3xy), and \(4y^2-7y^2=-3y^2\).

Which concept should I revise for this Mathematics MCQ?

\(9x^2-2x^2=7x^2\), (-5xy+8xy=3xy), and \(4y^2-7y^2=-3y^2\).

What exam hint can help solve this Mathematics question?

\(9x^2-2x^2=7x^2\), (-5xy+8xy=3xy), और \(4y^2-7y^2=-3y^2\)।