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Q: 97 × 97 = ?
  • A. 9391
  • B. 9409
  • C. 9049
  • D. 9309
Correct Answer: Option B - From the given expression, 97 × 97 = (97)² (100–3)² = (100)² + (3)² – 2 × 100 × 3 = 10000 + 9 – 600 = 9409
B. From the given expression, 97 × 97 = (97)² (100–3)² = (100)² + (3)² – 2 × 100 × 3 = 10000 + 9 – 600 = 9409

Explanations:

From the given expression, 97 × 97 = (97)² (100–3)² = (100)² + (3)² – 2 × 100 × 3 = 10000 + 9 – 600 = 9409