Mathematics Answer, Explanation and Revision Hints
\( 39^2 \) को ( (40-1)2 ) से निकालने पर कौन-सा मध्य पद घटेगा? / When finding \( 39^2 \) using ( (40-1)2 ), which middle term will be subtracted?
Correct Answer: B. (80) / सही मध्य पद. Explanation: ( (40-1)2=402-2\cdot40\cdot1+1 ), इसलिए (80) घटेगा। परीक्षा में (2ab) घटाएँ। / ( (40-1)2=402-2\cdot40\cdot1+1 ), so (80) is subtracted. Exam tip: subtract (2ab).
Which concept should I revise for this Mathematics MCQ?
( (40-1)2=402-2\cdot40\cdot1+1 ), so (80) is subtracted. Exam tip: subtract (2ab).
What exam hint can help solve this Mathematics question?
( (40-1)2=402-2\cdot40\cdot1+1 ), इसलिए (80) घटेगा। परीक्षा में (2ab) घटाएँ।
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