(ab-ac+db-dc) का गुणनखंडन कौन सा है?
Which is the factorisation of (ab-ac+db-dc)?
Explanation opens after your attempt
Correct Answer
A. ((a+d)(b-c))
Concept
Group as (a(b-c)+d(b-c)). Taking common ((b-c)) gives ((a+d)(b-c)).
Why this answer is correct
The correct answer is A. ((a+d)(b-c)). Group as (a(b-c)+d(b-c)). Taking common ((b-c)) gives ((a+d)(b-c)).
Exam Tip
समूह बनाकर (a(b-c)+d(b-c)) लिखें। समान ((b-c)) निकालने पर ((a+d)(b-c)) मिलता है।
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