किस विकल्प में \(2a^2-3ab+4b^2-a^2+5ab-b^2\) का सही सरल रूप है?
Which option gives the correct simplified form of \(2a^2-3ab+4b^2-a^2+5ab-b^2\)?
Explanation opens after your attempt
A. \(a^2+2ab+3b^2\)
Concept
\(2a^2-a^2=a^2\), (-3ab+5ab=2ab), and \(4b^2-b^2=3b^2\). Combine only matching variable parts.
Why this answer is correct
The correct answer is A. \(a^2+2ab+3b^2\). \(2a^2-a^2=a^2\), (-3ab+5ab=2ab), and \(4b^2-b^2=3b^2\). Combine only matching variable parts.
Exam Tip
\(2a^2-a^2=a^2\), (-3ab+5ab=2ab), और \(4b^2-b^2=3b^2\)। समान चर भागों को ही जोड़ें।
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