( (a+b+c)2 ) का सही प्रसार कौन सा है?
What is the correct expansion of ( (a+b+c)2 )?
Explanation opens after your attempt
A. \(a^2+b^2+c^2+2ab+2bc+2ca\)
Concept
The square of three terms includes all squares and twice each pair product. Exam tip: do not forget (2ab+2bc+2ca).
Why this answer is correct
The correct answer is A. \(a^2+b^2+c^2+2ab+2bc+2ca\). The square of three terms includes all squares and twice each pair product. Exam tip: do not forget (2ab+2bc+2ca).
Exam Tip
तीन पदों के वर्ग में सभी वर्ग और दो-दो गुणनफल के दोगुने पद आते हैं। परीक्षा में (2ab+2bc+2ca) न भूलें।
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