Use Identities to Evaluate : (97)2 - Mathematics

Use identities to evaluate : (97)²

Sum

(97)²
(97)² = (100 - 3)²
We know that,
( a - b )² = a² + b² - 2ab
∴ (100 - 3)² = 100² + 3² - 2 x 100 x 3
= 10000 + 9 - 600
= 9,409

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Chapter 4: Expansions (Including Substitution) - Exercise 4 (A) [Page 57]

Chapter 4 Expansions (Including Substitution)
Exercise 4 (A) | Q 2.3 | Page 57

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