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In which situation can ( (a+b)^2=a^2+b^2 ) be true?किस स्थिति में ( (a+b)^2=a^2+b^2 ) सही हो सकता है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: when (2ab=0)जब (2ab=0) हो
( (a+b)^2=a^2+2ab+b^2 ), so equality needs (2ab=0). Exam tip: understand the role of the middle term.( (a+b)^2=a^2+2ab+b^2 ) है, इसलिए समानता के लिए (2ab=0) चाहिए। परीक्षा में मध्य पद की भूमिका समझें।
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