किस दृश्य मॉडल में \(a^2+2ab+b^2-c^2\) को दो आयत भुजाओं में बदला जा सकता है?
In which visual model can \(a^2+2ab+b^2-c^2\) be changed into two rectangle sides?
Explanation opens after your attempt
Correct Answer
A. ((a+b+c)(a+b-c))difference after grouping
Concept
First (a-2+2ab+b-2=(a+b)2), then \(c^2\) is subtracted. In exams group first and then apply difference of squares.
Why this answer is correct
The correct answer is A. ((a+b+c)(a+b-c)) / difference after grouping. First (a-2+2ab+b-2=(a+b)2), then \(c^2\) is subtracted. In exams group first and then apply difference of squares.
Exam Tip
पहले (a-2+2ab+b-2=(a+b)2), फिर \(c^2\) घटता है। परीक्षा में समूह बनाकर वर्गों का अंतर लगाएं।
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