एक दृश्य प्रमाण में ( (a+b)(c+d) ) को चार छोटे आयतों में बाँटा गया। सही विभाजन कौन-सा है?
In a visual proof, ( (a+b)(c+d) ) is divided into four small rectangles. Which decomposition is correct?
Explanation opens after your attempt
B. (ac+ad+bc+bd)
Concept
Each small rectangle is made from one part of each side. In exams, multiply row by column.
Why this answer is correct
The correct answer is B. (ac+ad+bc+bd). Each small rectangle is made from one part of each side. In exams, multiply row by column.
Exam Tip
हर छोटे आयत की भुजाएँ एक-एक भाग से बनती हैं। परीक्षा में पंक्ति और स्तंभ का गुणन करें।
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