\(9x^2-5xy+4y^2-2x^2+8xy-7y^2\) को सरल करने पर क्या मिलेगा?
What is obtained after simplifying \(9x^2-5xy+4y^2-2x^2+8xy-7y^2\)?
Explanation opens after your attempt
A. \(7x^2+3xy-3y^2\)
Concept
\(9x^2-2x^2=7x^2\), (-5xy+8xy=3xy), and \(4y^2-7y^2=-3y^2\).
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 \(4y^2-7y^2=-3y^2\).
Exam Tip
\(9x^2-2x^2=7x^2\), (-5xy+8xy=3xy), और \(4y^2-7y^2=-3y^2\)।
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