किस विकल्प में (7ab-3a+2ab+5a) का सही सरल रूप है?
Which option gives the correct simplified form of (7ab-3a+2ab+5a)?
Explanation opens after your attempt
A. (9ab+2a)
Concept
(7ab+2ab=9ab) and (-3a+5a=2a). Do not treat (ab) and (a) as like terms.
Why this answer is correct
The correct answer is A. (9ab+2a). (7ab+2ab=9ab) and (-3a+5a=2a). Do not treat (ab) and (a) as like terms.
Exam Tip
(7ab+2ab=9ab) और (-3a+5a=2a)। (ab) और (a) को समान पद नहीं मानें।
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