( (a+3b+c)2 ) में (6ab) किससे आता है?
In ( (a+3b+c)2 ), where does (6ab) come from?
Explanation opens after your attempt
Correct Answer
B. \(2\times a\times3b\) सेFrom \(2\times a\times3b\)
Concept
In the square of three terms, twice the product of each pair appears. Exam tip: identify the pair for mixed terms.
Why this answer is correct
The correct answer is B. \(2\times a\times3b\) से / From \(2\times a\times3b\). In the square of three terms, twice the product of each pair appears. Exam tip: identify the pair for mixed terms.
Exam Tip
तीन पदों के वर्ग में हर जोड़े का दुगुना गुणन आता है। परीक्षा में मिश्र पदों की जोड़ी पहचानें।
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