\( 39^2 \) 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?

Explanation opens after your attempt
Correct Answer

B. (80)सही मध्य पद

Step 1

Concept

( (40-1)2=402-2\cdot40\cdot1+1 ), so (80) is subtracted. Exam tip: subtract (2ab).

Step 2

Why this answer is correct

The correct answer is B. (80) / सही मध्य पद. ( (40-1)2=402-2\cdot40\cdot1+1 ), so (80) is subtracted. Exam tip: subtract (2ab).

Step 3

Exam Tip

( (40-1)2=402-2\cdot40\cdot1+1 ), इसलिए (80) घटेगा। परीक्षा में (2ab) घटाएँ।

Question me issue ya doubt hai?

Answer, explanation, typing mistake ya suggestion directly hamari team ko bhejein. 📱Helpline (Call / WhatsApp): +91 7272824365

Related Mathematics Questions

FAQs

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।

Student Class Required

Select your class first

Quiz questions, daily challenge and practice pages will open according to your selected class. Class 11/12 ke liye stream bhi select karein.