( (a+b+c)2 ) में (ab) वाला पद किससे बनता है?
In ( (a+b+c)2 ), from where is the (ab)-term formed?
Explanation opens after your attempt
B. (2ab) सेFrom (2ab)
Concept
In the square of three terms, twice the product of every pair appears. From (a) and (b), we get (2ab).
Why this answer is correct
The correct answer is B. (2ab) से / From (2ab). In the square of three terms, twice the product of every pair appears. From (a) and (b), we get (2ab).
Exam Tip
तीन पदों के वर्ग में हर दो पदों का दोगुना गुणनफल आता है। (a) और (b) से (2ab) मिलता है।
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